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Inter (Part-1) Lahore Board 2012
Physics Paper: 1
Time: 20 Minutes Marks: 17
( !"ecti#e Type)
$ote: %our possi!&e ans'ers B * and + to each ,uestion are i#en. The choice'hich you think
is correct /&& that circ&e in ront o that ,uestion 'ith Marker or Pen ink. *uttin or/&&in t'o or
more circ&es 'i&& resu&t in ero mark in that ,uestion. rite the &etter B * or + inthe co&umn
('rite correct option) a ainst each ,uestion a&so. I there is a contraction in the!u!!&e and hand
'ritten ans'er !u!!&e option 'i&& !e considered correct.
31. 17
1. The apparent 'ei ht o a man in a &i t mo#in do'n 'ith an acce&eration o 4.5m 6 s2
(a) 0 (!) 4.5$ (c) 14. $ (d) In/nity
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2. orkin cyc&e o a typica& petro& en ine consists o :
(a) T'o strokes
(!) %our strokes
(c) 8i9 strokes
(d) i ht strokes
;. <adar system is an app&ication o :
(a) Inter erence
(!) Beats
(c) 8tationary 'a#es
(d) +opp&er e=ect
>. The sum o three num!ers 2.7?>; > 10 and 1.27; up-to correct decima& p&ace
is:
(a) 5.12 (!) 5.1; (c) 5.127; (d) 5.127
?. The 8I unit o an u&ar acce&eration is:
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(a) rad 6 sec2
(!) rad 6 sec
(c) re# 6 sec2
(d) re# 6 sec
. Time period o simp&e pendu&um on&y depends on:
(a) Mass o the !o!
(!) Len th o the pendu&um
(c) mp&itude o #i!ration
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(d) 8i e o the !o!
7. Position #ector o a point P (a ! c) in @A-P&ane is i#en !y:
(a) C DE D (!) C DE
(c) C DE
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(d) C DE DE
5. The unit o entropy is:
(a) FG (!) F6G (c) F6G2 (d) G6F
4. In the ne'er systems o /!er optics si na&s are re enerated !y p&acinrepeaters 'hich may !e
separated !y as much as:
(a) ;0 km (!) ?0 km (c) 100 km (d) ?00 km
10.Mathematica&&y unit #ector is i#en !y:
(a) C
(!) C
(c) C
(d) C . 11.Lon itudina& 'a#es do not e9hi!it:
(a) <eHection
(!) <e raction
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(c) +i=raction
(d) Po&ari ation
12. ater Ho's out rom a pipe at ; k 6 sec and its #e&ocity chan es rom ?m 6 s toero on strikin
the 'a&&. The orce due to 'ater Ho' is:
(a) ;$ (!) ?$ (c) 10$ (d) 1?$
1;. 10 'a#es pass throu h the medium in one sec. 'ith speed o 10 m 6 s. The'a#e&en th o 'a#es
(a) 1m (!) 10m (c) 20m (d) 100m
1>. 8I units o pressure are:
(a) $-m
2 - m
(!) $
(c) $ - m
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-2 - m
(d) $
1?.The mathematica& re&ation C 2 (h h ) is kno'n as:
(a) ,uation o continuity
(!) Bernou&&iJs e,uation
(c) Torrice&&iJs theorem
(d) Kentri re&ation
1 .The e=ecti#e path di=erence !et'een t'o reHected !eams in 9-rays di=raction!y crysta&s is:
(a) dsin (!) 2 dsin (c) dsin( 62) (d) dsin(2 )
2
-2
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17. Po'er can !e de/ned as the product o :
(a) %orce and disp&acement
(!) %orce and #e&ocity
(c) %orce and time
(d) %orce and mass
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Inter (Part-1) Lahore Board 2012
Physics Paper: 1
Time: 2.>0 ours Marks: 5
( ssay Type)
$ote: ut o 3. $o. 1 2 ; and > 'rite any T'enty-T'o (22) short ans'ers. hi&e'ritin ans'ers
3. $o. and its part care u&&y. ach part carries t'o marks. >>
8 *TI $ -1
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32. rite short ans'ers to any 5 ,uestions.
1) o' many nano-seconds are there in 1 year
2) Ni#e the dra'!acks to use the period o a pendu&um as a time standard.
;) hat are the dimensions and units o ra#itationa& constant ONJ in the ormu&aC
>) hat is ne ati#e o a #ector o' a #ector B is su!tracted rom a #ector
?) %ind the unit #ector o the #ector C > DE ; D. ) *an a !ody rotate a!out its centero ra#ity under the action o its 'ei ht
7) +i=erentiate !et'een e&astic and ine&astic co&&ision.
5) hat Is pro"ecti&e motion In 'hat direction acce&eration is ero in this motion
4) +e/ne impu&se and sho' that ho' it is re&ated to &inear momentum
10) 8ho' that 1 k'h C ;. 9 10
11) n o!"ect has 1 " o potentia& ener y. 9p&ain 'hat does it mean.
12) +e/ne po'er. rite its 8I unit.
3;. rite short ans'ers to any 5 ,uestions.
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1) hat is meant !y moment o inertia 9p&ain its si ni/cance.
2) 9p&ain the di=erence !et'een tan entia& #e&ocity and an u&ar #e&ocity.
;) 8tate the direction o o&&o'in #ectors in simp&e situation.
(a) n u&ar momentum
(!) n u&ar #e&ocity
>) 9p&ain ho' the s'in is produced in a ast mo#in cricket !a&&
?) *onsiderin Bernou&&iJs princip&e e9p&ain the 'orkin o a car!uretor o a motorcar.
".
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) rite e' &ines on !&ood Ho'.
7) 8tate Torrice&&iJs theorem.
5) hat happen to the period o a simp&e pendu&um i its &en th is dou!&e
4) In re&ation to 8 M e9p&ain the e,uation
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(a) C sin( E Q)
(!) C
10) hat is the #e&ocity o sound in air i temperature o air is 200*
11) Is it possi!&e or t'o di=erent identica& 'a#es tra#e&&in in the e same directiona&on the strin
to i#e rise to a stationary 'a#es
3>. rite short ans'ers to any ,uestions.
1) o' can the di=erence !et'een inter erence rin es a=ect !y the separation!et'een the s&its o
@oun Js e9periment *an rin es disappear
2) n oi& /&m spreadin o#er a 'et ootpath sho's co&ors. 9p&ain ho' it happens. ;)o' 'ou&d you distin uish !et'een un-po&ari ed and p&ain-po&ari ed &i hts
>) ne can !uy a cheap microscope or use !y the chi&dren. The ima es seen in
such a microscope
ha#e co&ored ed es. hy is this so
?) o' the po'er is &ost in optica& /!er throu h dispersion e9p&ain
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) I a person 'as &ookin throu h a te&escope at the u&& moon ho' 'ou&d theappearance o the
moon !e chan ed !y co#erin ha& o the o!"ecti#e &ens
7) hy is the a#era e #e&ocity o the mo&ecu&es in a as ero !ut the a#era e o thes,uare o the
#e&ocities is not ero
5) 8peci/c heat o a as at constant pressure is reater than speci/c heat atconstant #o&ume. hy
4) *an the mechanica& ener y !e con#erted comp&ete&y into heat ener y I so i#ean e9amp&e.
8 *TI $ R II
$ote: ttempt any T < ,uestions.
3?. (a) +e/ne e&astic co&&isions. 8ho' that or e&astic co&&isions in one dimension the#e&ocity o
approach is e,ua& to the #e&ocity o separation. ?
(!) Ni#en that C D 2 DE ; C ; D > /nd the pro"ection o on . ;
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3 . (a) +e/ne conser#ati#e /e&d. Pro#e that the 'ork done in the earthJsra#itationa& /e&d is
independent o the path o&&o'ed. ?
(!) hat shou&d !e the or!ita& speed to &aunch a sate&&ite in a circu&ar or!it 400 kma!o#e the
sur ace o earth (Take mass o the earth as .0 9 102> k and its radius as >00km) ;
37. (a) +e/ne mo&ar speci/c heat and pro#e the re&ation *p - *# C <. ?
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(!) o' &ar e must a heatin duct !e i air mo#in 'ith ;.0 ms-1 a&on it canrep&enish the air
in a room o ;00 m; #o&ume e#ery 1? min ( ssume the airJs density remainsconstant). ;
35. (a) +e/ne and e9p&ain simp&e pendu&um ?
(!) stationary 'a#e is esta!&ished in a strin 'hich is 120 cm &on and /9ed at
!oth ends.
The strin #i!rates in our se mentsS at a re,uency o 120 . +etermine its'a#e&en th and
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the undamenta& re,uency. ;
34. (a) +escri!e ho' Miche&son measured the speed o &i ht. ?
(!) In a dou!&e s&it e9periment the second order ma9imum occurs at 0 C 0.2? . The
'a#e&en th is ?0 nm. +etermine the s&it separation. ;
Inter (Part-1) Lahore Board 2011
Physics Paper: 1
Time: 20 Minutes Marks: 17
( !"ecti#e Type)
$ote: rite ans'ers to the ,uestions on the o!"ecti#e ans'er sheet pro#ided. %ourpossi!&e ans'ers
B * and + to each ,uestion are i#en. hich ans'er you consider correct /&& thecirc&e in ront
o . B. * or + 'ith Marker or Pen ink to each ,uestion on the ans'er sheetpro#ided.
31. 8ome possi!&e ans'ers to each statement are i#en !e&o'. 17
1. The #a&ue o OrJ or diatomic as is:
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(a) 1. 7 (!) 1.>0 (c) 1.24 (d) In/nity
2. The /na& ima e ormed !y simp&e microscope is:
(a) Kirtua& and in#erted
(!) Kirtua& and erect
(c) <ea& and erect
(d) <ea& and in#erted
;. The resu&tant ma nitude o $ orce actin at ri ht an &e to a 5$ orce is:
(a) 2$ (!) 1>$ (c) 5$ (d) 10$
>. The re racti#e inde9 o 'ater is >.;;. The speed o &i ht in 'ater is:
(a) ;9105m8-1
(!) 1.5 9105m8-1
(c) 2.; 9105m8-1
(d) 0
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?. The apparent 'ei ht o a man in an ascendin &i t mo#in 'ith acce&eration OaJ:
(a) Increases
(!) +ecrease
(c) <emains constant
(d) Becomes ero
. The #a&ue o trip&e point o 'ater is:
(a) ;7;.1 G (!) 27;. 1 G (c) 212 G (d) 100G
7. The dimensions o po'er are:
(a) UMLT-1V (!) UML2T
5. The 8.I. unit o OpressureJ in terms o !ase units are:
(a) G m-18
-2 (!) G m-18
-2V (c) UML2T
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-; (c) G m8-2 (d) G m28
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4. I 20 'a#es pass throu h a medium in 1 sec. 'ith a speed o 20m8-1
(a) 20m (!) >0m (c) >00m (d) 1m
10.The distance !et'een t'o consecuti#e 'a#e ronts is ca&&ed :
(a) Time period (!) %re,uency (c) a#e&en th (d)
+isp&acement
11.The de#ice used or the measurement o &i,uid Ho' is:
(a) Manometer (!) Barometer (c) ydrometer (d)
Kenturi meter
12.The ma nitude o #ector product o t'o non- ero #ectors W and W makin an an &e
X 'ith each
(a) B8in (!) B8in (c) B*os (d) B
1;.The ratio !et'een or!ita& and escape #e&ocities are:
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(a) 1 (!) 2 (c) Y2 (d) Y
1>. pro"ecti&e is thro'n up'ard 'ith initia& #e&ocity ZKi[ makin an an &e 'ith thehori onta&.
The ma9imum hori onta& ran e is i#en !y:
(!) 2
(c) sin 2
(d) 2
1?.The e\ciency o petro& en ine is a!out:
(a) 20 to 2?]
(!) ;0 to ;?]
(c) ;? to >0 ]
(d) 2? to ;0]
1 .The 8.I. units o sprin constant are:
(a) m-1 (!) $m-1 (c) $m-2 (d) $m2
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17. hich o the o&&o'in is &east mu&tip&e:
(a) Pico (!) %emto (c) $ano (d) tto
sin 2
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Inter (Part-1) Lahore Board 2011
Physics Paper: 1
Time: 2.>0 ours Marks: 5
( ssay Type)
$ote: ut o 3. $o. 1 2 ; and > 'rite any T'enty-T'o (22) short ans'ers. hi&e'ritin ans'ers
3. $o. and its part care u&&y. ach part carries t'o marks. >>
8 *TI $ -1
31. 1) The period o simp&e pendu&um is measured !y a stop 'atch. hat types oerrors are possi!&e in
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the time period
2) hy do 'e /nd it use u& to ha#e t'o units or the amount o su!stance ki&o ramand mo&e
;) rite the dimensions o : (i) Pressure (ii) +ensity.
>) I a&& o the components o the #ectors 1 and 2 'ere re#ersed ho' 'ou&d a&ter19 2 . ?) $ame the three di=erent conditions that cou&d make 2 ^ 2C 0
) *an a !ody rotate a!out its center o ra#ity under the action o its 'ei ht
7) +e/ne e&astic and ine&astic co&&isions. 5) t 'hat point or points in its path does apro"ecti&e ha#e its minimum speed its ma9imum
1) 8ho' raphica&&y ho' the disp&acement and #e&ocity o a #ertica&&y thro'n !a&&#aries 'ith time.
2) +e/ne conser#ati#e and non-conser#ati#e orces.
;) person ho&ds a !a o roceries 'hi&e standin sti&&. car is stationary 'ith itsen ine runnin .
o' are the t'o situations simi&ar rom the point o #ie' o 'ork
>) hat sort o ener y is in the o&&o'in :
(a) compressed sprin
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(!) mo#in car
?) 8ho' that or!ita& an u&ar momentum L0 C m#r.
) @ou ha#e a disc and a hoop o same mass and si e. hich o the t'o has reatermoment o
inertia and 'hy
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7) n o!"ect or!itin around the earth is said to !e a ree&y a&&in !ody. hy
5) 8tate Torrice&&i_s theorem. 3;.
1) hy 50 drop&ets appear to !e suspended in air
2) person is standin near a ast mo#in train is there any dan er that he 'i&& a&&to'ards it
;) hy so&diers are ad#ised to !reak their steps 'hen marchin on a !rid e
>) +oes re,uency depend on amp&itude or harmonic osci&&ator
?) *an 'e rea&i e an idea& simp&e pendu&um
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) 9p&ain 'hy sound tra#e&s aster in 'arm air than in co&d air
7) o' are !eats use u& in tunin musica& instrument
5) hat is apparent chan e in re,uency 'hen source is mo#in a'ay romstationary o!ser#er
1) `nder 'hat conditions t'o or more sources o &i ht !eha#e as coherent sources
2) The center o $e'tonJs rin s is dark. hy
;) rite do'n t'o methods to o!tain p&ane po&ari ed !eam o &i ht.
>) hat is the unction o co&&imator in a spectrometer
?) 9p&ain the di=erence !et'een an u&ar ma ni/cation and reso&#in po'er o an
optica&
instrument.
) hy 'e use in ra-red &i ht in a /!er optic communication system
7) rite t'o postu&ates o kinetic theory o ases.
5) thermos Hask containin mi&k as a system is shaken rapid&y. +oes thetemperature o mi&k
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4) +oes entropy o a system increase or decrease due to riction
8 *TI $ R II
$ote: ttempt any T < ,uestions.
3?. (a) +iscuss the e&astic co&&ision o t'o smooth !a&&s in one dimension and /ndtheir
#e&ocities a ter the co&&ision. ?
(!) The &ine o action o orce C 2 passes throu h a point 'hose position #ectoris 1 E . %ind the moment o a!out the ori in. ;
3 . (a) hat are eo-stationary sate&&ites *a&cu&ate the radius o eo-stationaryor!it ?
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(!) 1000 k car at the top o an inc&ine 10m hi h and 100 m &on is re&eased andro&&s
do'n the hi&&. hat is its speed at the !ottom o the inc&ine i the a#era e retardinorce due
to riction is >50 $ ;
37. (a) Pro#e that the a!so&ute temperature o an idea& as is direct&y proportiona&to the a#era e
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trans&ation kinetic ener y o as mo&ecu&es. ?
(!) ater Ho's throu h a hose 'hose interna& diameter is 1 cm at a speed o 1 ms-1
shou&d !e the diameter o the no &e i the 'ater is to emer e at 21 ms-1 . ;
35. (a) +e/ne simp&e harmonic motion. +eri#e the re&ation or instantaneous#e&ocity or the
pro"ection o partic&e OPJ mo#in in a circ&e. ?
(!) pipe has a &en th o 1 meter. +etermine the re,uencies o the undamenta&and the /rst
t'o harmonics i the pipe opens at !oth ends. (8peed o sound in air C ;>0ms-1) ;
34. (a) +escri!e the youn dou!&e s&it e9periment. +eri#e the e9pression or rin espacin . ?
(!) n astronomica& te&escope ha#in ma ni yin po'er ? consist o t'o thin &enses2? cm
apart. %ind the oca& &en th o &enses.
Inter (Part-1) Lahore Board 2010
Physics Paper: 1
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Time: 20 Minutes Marks: 17
$ote: `se this paper to 'rite the ans'ers to the o!"ecti#e ,uestions. $o mark 'i&&!e a'arded or
cuttin o#er-'ritin or usin a penci&. This paper must !e ta ed 'ith the ans'er-!ook.
31. 8ome possi!&e ans'ers to each statement are i#en !e&o'. Tick mark thecorrect ans'er: 17
1. The 8.I unit o so&id an &e is:
(a) 8teradian (!) +e ree (c) <e#o&ution (d) <adian
2. %orce in terms o !ase unit is:
(a) G ms-1 (!) G ms-2 (c) G m-1
;. sin &e #ector 'hich has same e=ect as a&& the ori ina& #ectors taken to ether isca&&ed:
(a) `nit #ector
(!) ,ua& #ector
(c) <esu&tant #ector
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(d) $u&& #ector
>. The resu&tant o t'o orces $ and 5 $ actin at ri ht an &e to each other is:
(a) >$ (!) $ (c) 5$ (d) 10$
?. The motion o a rocket is in accordance 'ith &a' o conser#ation o :
(a) Linear momentum
(!) ner y
(c) Mass
(d) n u&ar momentum
. Gi&o'att hour is the unit o :
(a) Po'er (!) ork (c) %orce (d) Momentum
7. The minimum #e&ocity re,uired to put a sate&&ite into or!it is:
(a) ?.4 kms-1 (!) .4 kms-1 (c) 7.4 kms-1 (d) 5.4 kms-1
5. The e9pression or the or!ita& speed o a sate&&ite is:
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(!)
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4. The dimensions o co-e\cient o #iscosity are:
(a) UML-1T
10.I the time period o simp&e pendu&um is 2 seconds its re,uency 'i&& !e:
(a) 1.0 (!) 0.? (c) 1.? (d) 2
11.The error in the #a&ue o speed o sound ca&cu&ated !y $e'ton at 8TP is a!out:
(a) 1>] (!) 1?] (c) 1 ] (c) 15]
12.The speed o sound is reater in so&ids due to their hi h:
(a) +ensity (!) Pressure (c) Temperature (d) &asticity
1;.$e'ton_s rin s are ormed as a resu&t o :
(a) Inter erence (!) +ispersion (c) +i=raction (d) Po&ari ation
1>.The &i ht emitted rom L + has a 'a#e&en th:
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(a) 1.; pm (!) 1.;bm (c) 1.;mm (d) 1.;nm
1?. &ayer o#er the centra& core o the "acket is ca&&ed
(a) Facket (!) P&astic (c) *&addin (d) <u!!er
1 .The e\ciency o petro& en ine is a!out:
(a) 20 to 2?]
(!) ;0 to ;?]
(c) ;? to >0 ]
(d) 2? to ;0]
17.The process 'hich is carried out at constant temperature is ca&&ed:
(a) Isotherma& (!) dia!atic (c) Isochoric (d) Iso!aric
-1V (!) MLT-2 (c) MLT-1 (d) ML2T
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Inter (Part-1) Lahore Board 2010
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Physics Paper: 1
Time: 2.>0 ours Marks: 5
$ote: && ,uestions are attempted on the ans'er !ook.
32. rite any T $T@-T (22) short ans'ers o the o&&o'in ,uestions: >>
1. $ame t'o repetiti#e phenomena occurrin in nature 'hich cou&d ser#e asreasona!&e time
2. +eri#e the dimensions o pressure and density.
;. The &en th and the 'idth o the rectan u&ar p&ate are 1?.; cm and 12.50 cmrespecti#e&y. %ind
the area o the p&ate up to correct si ni/cant / ures.
>. +e/ne the terms unit #ector and position #ector.
?. *an a #ector ha#e a component reater than #ectorJs ma nitude
. T'o #ectors ha#e une,ua& ma nitudes. *an their 8um !e ero 9p&ain.
7. hat is the di=erence !et'een uni orm and #aria!&e #e&ocity +e/ne acce&erationand i#e its
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8.I. units.
5. *an the #e&ocity o an o!"ect re#erse the direction 'hen acce&eration is constantI so i#e
4. +e/ne impu&se. o' is it re&ated to &inear momentum
10. hat is so&ar ener y o' sun&i ht can !e con#erted into e&ectrica& ener y
11.In 'hich case more 'ork is done 'hen a ?0 k !a is &i ted throu h ?0 cm or'hen a ?0 k
crate is pushed throu h 2 m 'ith a orce o ?0 $
12. hen a rocket re-enters the atmosphere its nose cone !ecomes #ery hothere does this
ener y come rom
1;. 9p&ain the di=erence !et'een tan entia& and an u&ar #e&ocity. hat is there&ation !et'een
1>. hat is meant !y moment o inertia 9p&ain its si ni/cance.
1?.+escri!e 'hat shou&d !e the minimum #e&ocity or a sate&&ite to or!it c&ose to theearth around it.
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1 . hat do you understand !y the term #iscosity Ni#e its 8.I unit.
17. hy o drop&ets appear to !e suspended in air
'''.8ay2Learn.com Pa e > o ?
15.T'o ro' !oats mo#in para&&e& in the same direction are pu&&ed to'ards eachother 'hy
14.$ame t'o characteristics o simp&e harmonic motion.
20. hat is the tota& distance tra#e&&ed !y an o!"ect mo#in 'ith 8 M in a timee,ua& to its period
i its amp&itude is
21.+oes the acce&eration o a simp&e harmonic osci&&ator remain constant durin itsmotion Is the
acce&eration e#er ero 9p&ain.
22. hat eatures do &on itudina& 'a#es ha#e common 'ith trans#erse 'a#es
2;.+e/ne the terms node and antinode.
2>. o' are !eats use u& in tunin a musica& instrument
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2?.`nder 'hat conditions t'o or more sources o &i ht !eha#e as coherent sources
2 . n oi& /&m spreadin o#er a 'et ootpath sho's co&ors. 9p&ain ho' it happens.27. o' 'ou&d you mana e to et more orders o spectra usin a di=raction ratin
25. hat do you understand !y &inear ma ni/cation and an u&ar ma ni/cation
24. hy 'ou&d it !e ad#anta eous to use !&ue &i ht 'ith a compound microscope
;0.I a person 'as &ookin throu h a te&escope at the u&& moon ho' 'ou&d the
appearance o the
moon !e chan ed !y co#erin ha& o the o!"ecti#e &ens
;1. hy the a#era e #e&ocity o the mo&ecu&es in a as is ero !ut the a#era e o thes,uare o
#e&ocities is not ero
;2. 8peci/c heat o a as at constant pressure is reater than speci/c heat atconstant #o&ume. hy
;;.Is it possi!&e to construct a heat en ine that 'i&& not e9pe& heat into theatmosphere
$ote: ttempt any T < ,uestions.
3;. (a) 9p&ain the addition o #ectors !y rectan u&ar components method. ?
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(!) 1?00 k car has its #e&ocity reduced rom 20 ms-1
the a#era e retardin orce ;
3>. (a) +e/ne ra#itationa& /e&d. Pro#e that 'ork done in the earth_s ra#itationa&/e&d is
independent o path o&&o'ed. ?
(!) *a&cu&ate the an u&ar momentum o a star o mass 2 9 10;0 k and radius 7 910? km. I it
makes one comp&ete rotation in 20 days 'hat is its G. . ;62 ;62
3?. (a) 8tate the e,uation o continuity and deri#e its re&ation. ?
(!) *arnot en ine uti&i es an idea& as. The source temperature is 227 * and thesink
temperature is 12.7 *. %ind the e\ciency o the en ine. ;
3 . (a) +e/ne simp&e harmonic motion. 8ho' that ener y is conser#ed or a !ody
e9ecutin
simp&e harmonic motion. ?
'''.8ay2Learn.com Pa e ? o ?
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(!) church or an consists o pipes each opens at one end o di=erent &en ths. The
minimum &en th is ;0 mm and the &on est is >m. *a&cu&ate the re,uency ran e o
undamenta& notes. (8peed o sound C ;>0 ms-1) ;
37. (a) +e/ne di=raction o &i ht. 9p&ain di=raction o 9-rays !y crysta& and deri#eBra
e,uation. ?
(!) compound microscope has &enses o oca& &en th 1 cm and ; cm. n o!"ect isp&aced
1.2 cm rom the o!"ect &ens. I a #irtua& ima e is ormed 2? cm rom the eyeca&cu&ate: 8eparation o the &enses. ;62
Ma ni yin po'er.
Inter (Part-1) Lahore Board 2010
Physics Paper: 1
Time: 20 Minutes Marks: 17
$ote: `se this paper to 'rite the ans'ers to the o!"ecti#e ,uestions. $o mark 'i&&!e a'arded or
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cuttin o#er-'ritin or usin a penci&. This paper must !e ta ed 'ith the ans'er-!ook.
31. 8ome possi!&e ans'ers to each statement are i#en !e&o'. Tick mark thecorrect ans'er: 17
1. The 8.I unit o so&id an &e is:
(a) 8teradian (!) +e ree (c) <e#o&ution (d) <adian
2. %orce in terms o !ase unit is:
(a) G ms-1 (!) G ms-2 (c) G m-1
;. sin &e #ector 'hich has same e=ect as a&& the ori ina& #ectors taken to ether isca&&ed:
(a) `nit #ector
(!) ,ua& #ector
(c) <esu&tant #ector
(d) $u&& #ector
>. The resu&tant o t'o orces $ and 5 $ actin at ri ht an &e to each other is:
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(a) >$ (!) $ (c) 5$ (d) 10$
?. The motion o a rocket is in accordance 'ith &a' o conser#ation o :
(a) Linear momentum
(!) ner y
(c) Mass
(d) n u&ar momentum
. Gi&o'att hour is the unit o :
(a) Po'er (!) ork (c) %orce (d) Momentum
7. The minimum #e&ocity re,uired to put a sate&&ite into or!it is:
(a) ?.4 kms-1 (!) .4 kms-1 (c) 7.4 kms-1 (d) 5.4 kms-1
5. The e9pression or the or!ita& speed o a sate&&ite is:
(!)
'''.8ay2Learn.com Pa e 2 o ?
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4. The dimensions o co-e\cient o #iscosity are:
(a) UML-1T
10.I the time period o simp&e pendu&um is 2 seconds its re,uency 'i&& !e:
(a) 1.0 (!) 0.? (c) 1.? (d) 2
11.The error in the #a&ue o speed o sound ca&cu&ated !y $e'ton at 8TP is a!out:
(a) 1>] (!) 1?] (c) 1 ] (c) 15]
12.The speed o sound is reater in so&ids due to their hi h:
(a) +ensity (!) Pressure (c) Temperature (d) &asticity
1;.$e'ton_s rin s are ormed as a resu&t o :
(a) Inter erence (!) +ispersion (c) +i=raction (d) Po&ari ation
1>.The &i ht emitted rom L + has a 'a#e&en th:
(a) 1.; pm (!) 1.;bm (c) 1.;mm (d) 1.;nm
1?. &ayer o#er the centra& core o the "acket is ca&&ed
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(a) Facket (!) P&astic (c) *&addin (d) <u!!er
1 .The e\ciency o petro& en ine is a!out:
(a) 20 to 2?]
(!) ;0 to ;?]
(c) ;? to >0 ]
(d) 2? to ;0]
17.The process 'hich is carried out at constant temperature is ca&&ed:
(a) Isotherma& (!) dia!atic (c) Isochoric (d) Iso!aric
-1V (!) MLT-2 (c) MLT-1 (d) ML2T
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Inter (Part-1) Lahore Board 2010
Physics Paper: 1
Time: 2.>0 ours Marks: 5
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$ote: && ,uestions are attempted on the ans'er !ook.
32. rite any T $T@-T (22) short ans'ers o the o&&o'in ,uestions: >>
1. $ame t'o repetiti#e phenomena occurrin in nature 'hich cou&d ser#e asreasona!&e time
2. +eri#e the dimensions o pressure and density.
;. The &en th and the 'idth o the rectan u&ar p&ate are 1?.; cm and 12.50 cm
respecti#e&y. %ind
the area o the p&ate up to correct si ni/cant / ures.
>. +e/ne the terms unit #ector and position #ector.
?. *an a #ector ha#e a component reater than #ectorJs ma nitude
. T'o #ectors ha#e une,ua& ma nitudes. *an their 8um !e ero 9p&ain.
7. hat is the di=erence !et'een uni orm and #aria!&e #e&ocity +e/ne acce&erationand i#e its
8.I. units.
5. *an the #e&ocity o an o!"ect re#erse the direction 'hen acce&eration is constantI so i#e
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4. +e/ne impu&se. o' is it re&ated to &inear momentum
10. hat is so&ar ener y o' sun&i ht can !e con#erted into e&ectrica& ener y
11.In 'hich case more 'ork is done 'hen a ?0 k !a is &i ted throu h ?0 cm or'hen a ?0 k
crate is pushed throu h 2 m 'ith a orce o ?0 $
12. hen a rocket re-enters the atmosphere its nose cone !ecomes #ery hot
here does this
ener y come rom
1;. 9p&ain the di=erence !et'een tan entia& and an u&ar #e&ocity. hat is there&ation !et'een
1>. hat is meant !y moment o inertia 9p&ain its si ni/cance.
1?.+escri!e 'hat shou&d !e the minimum #e&ocity or a sate&&ite to or!it c&ose to theearth around it.
1 . hat do you understand !y the term #iscosity Ni#e its 8.I unit.
17. hy o drop&ets appear to !e suspended in air
'''.8ay2Learn.com Pa e > o ?
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15.T'o ro' !oats mo#in para&&e& in the same direction are pu&&ed to'ards eachother 'hy
14.$ame t'o characteristics o simp&e harmonic motion.
20. hat is the tota& distance tra#e&&ed !y an o!"ect mo#in 'ith 8 M in a timee,ua& to its period
i its amp&itude is
21.+oes the acce&eration o a simp&e harmonic osci&&ator remain constant durin itsmotion Is the
acce&eration e#er ero 9p&ain.
22. hat eatures do &on itudina& 'a#es ha#e common 'ith trans#erse 'a#es
2;.+e/ne the terms node and antinode.
2>. o' are !eats use u& in tunin a musica& instrument
2?.`nder 'hat conditions t'o or more sources o &i ht !eha#e as coherent sources
2 . n oi& /&m spreadin o#er a 'et ootpath sho's co&ors. 9p&ain ho' it happens.27. o' 'ou&d you mana e to et more orders o spectra usin a di=raction ratin
25. hat do you understand !y &inear ma ni/cation and an u&ar ma ni/cation
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24. hy 'ou&d it !e ad#anta eous to use !&ue &i ht 'ith a compound microscope
;0.I a person 'as &ookin throu h a te&escope at the u&& moon ho' 'ou&d theappearance o the
moon !e chan ed !y co#erin ha& o the o!"ecti#e &ens
;1. hy the a#era e #e&ocity o the mo&ecu&es in a as is ero !ut the a#era e o thes,uare o
#e&ocities is not ero
;2. 8peci/c heat o a as at constant pressure is reater than speci/c heat atconstant #o&ume. hy
;;.Is it possi!&e to construct a heat en ine that 'i&& not e9pe& heat into theatmosphere
$ote: ttempt any T < ,uestions.
3;. (a) 9p&ain the addition o #ectors !y rectan u&ar components method. ?
(!) 1?00 k car has its #e&ocity reduced rom 20 ms-1
the a#era e retardin orce ;
3>. (a) +e/ne ra#itationa& /e&d. Pro#e that 'ork done in the earth_s ra#itationa&/e&d is
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independent o path o&&o'ed. ?
(!) *a&cu&ate the an u&ar momentum o a star o mass 2 9 10;0 k and radius 7 910? km. I it
makes one comp&ete rotation in 20 days 'hat is its G. . ;62 ;62
3?. (a) 8tate the e,uation o continuity and deri#e its re&ation. ?
(!) *arnot en ine uti&i es an idea& as. The source temperature is 227 * and thesink
temperature is 12.7 *. %ind the e\ciency o the en ine. ;
3 . (a) +e/ne simp&e harmonic motion. 8ho' that ener y is conser#ed or a !odye9ecutin
simp&e harmonic motion. ?
'''.8ay2Learn.com Pa e ? o ?
(!) church or an consists o pipes each opens at one end o di=erent &en ths. The
minimum &en th is ;0 mm and the &on est is >m. *a&cu&ate the re,uency ran e o
undamenta& notes. (8peed o sound C ;>0 ms-1) ;
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37. (a) +e/ne di=raction o &i ht. 9p&ain di=raction o 9-rays !y crysta& and deri#eBra
e,uation. ?
(!) compound microscope has &enses o oca& &en th 1 cm and ; cm. n o!"ect isp&aced
1.2 cm rom the o!"ect &ens. I a #irtua& ima e is ormed 2? cm rom the eyeca&cu&ate: 8eparation o the &enses. ;62
Ma ni yin po'er.
Inter (Part-1) Lahore Board 201> Nroup 1
Physics Paper: 1
Time: 20 Minutes Marks: 17
( !"ecti#e Type)
$ote: %our possi!&e ans'ers B * and + to each ,uestion are i#en. The choice'hich you think
is correct /&& that circ&e in ront o that ,uestion 'ith Marker or Pen ink. *uttin or/&&in t'o or
more circ&es 'i&& resu&t in ero mark in that ,uestion. rite the &etter B * or + inthe co&umn
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('rite correct option) a ainst each ,uestion a&so. I there is a contraction in the!u!!&e and hand
'ritten ans'er !u!!&e option 'i&& !e considered correct.
31. 17
1. The stationary 'a#es consist o :
(a) *rests and trou hs
(!) *ompressions and e&on ations
(c) $odes and antinodes
(d) <eHection and rare raction
2. hen one mirror o a Miche&son Inter erometer is mo#ed a distance o 0.? mm2000 rin es are
o!ser#ed. The 'a#e &en th o &i ht used is :
(a) ?000m
(!) ?000 0
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(c) ?00cm
(d) 2000 0
;. The area !et'een #e&ocity-time raph and the time a9is is numerica&&y e,ua& to :
(a) 8peed o o!"ect
(!) +istance co#ered !y the o!"ect
(c) #era e #e&ocity o the o!"ect
(d) cce&eration o the o!"ect
>. The optica& /!er is co#ered or protection !y a :
(a) N&ass Facket
(!) P&astic Facket
(c) *opper Facket
(d) &uminium Facket
?. Internationa& Te&ecommunication 8ate&&ite r ani ation operates at micro'a#ere,uencies o :
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(a) > 5 and 10
'''.8ay2Learn.com Pa e 2 o 7
(!) > 11 and 1> N
(c) > 5 and 12
(d) > 5 11 and 1 N
. hich is the process in 'hich temperature o the system remains constant:
(a) Iso!aric process
(!) Isochoric process
(c) Isotherma& process
(d) dia!atic process
7. hen a !ody is 'hir&ed in a hori onta& circ&e !y means o a strin the centripeta&orce is
supp&ied !y :
(a) Mass o a !ody
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(!) Ke&ocity o a !ody
(c) Tension in the strin
(d) *entripeta& acce&eration
5. I the resu&tant o t'o #ectors each o ma nitude % is a&so o ma nitude % thean &e !et'een
them 'i&& !e :
(a) ;0 (!) 0 (c) 40 (d) 120
4. set o re,uencies 'hich are mu&tip&es o the undamenta& re,uency are ca&&ed :
(a) +opp&er e=ect
(!) $oda& re,uencies
(c) Beat re,uencies
(d) armonics
10.The pitch o sound depends upon :
(a) Intensity o sound
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(!) Loudness o sound
(c) a#e&en th o sound
(d) %re,uency o sound
11.The &o'er readin o !&ood pressure is ca&&ed :
(a) 8ysto&ic pressure
(!) +iasto&ic pressure
(c) $orma& pressure
(d) $on-norma& pressure
12. hen the pro"ecti&e reaches the hi hest point o tra"ectory the #ertica&component o #e&ocity
!ecomes :
(a) 8ma&& (!) Ma9imum (c) Kicos (d) Aero
1;.I a car mo#es 'ith a uni orm speed o 2m 6 sec. in a circ&e o radius 0.> m itsan u&ar speed is :
(a) >rad6sec
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(!) ? rad6sec
(c) 1. rad6sec
(d) 2.5 rad6sec
1>.The #a&ue o so&ar constant is :
(a) 1.>k'm-2
(!) 1.0k' m-2
'''.8ay2Learn.com Pa e ; o 7
(c) >.1k' m-2
(d) .1k' m-2
1?.The re,uency o 'a#es produced in micro'a#e o#en is :
(a) 1>;? (!) 2>?0M (c) 15 0M (d) 25?0
1 . system does 00 F o 'ork and at the same time has its interna& ener yincreased !y ;20 F.
o' much heat has !een supp&ied :
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(a) 250 F
(!) 420F
(c) 00 F
(d) 200 F
17. &i ht year is the distance &i ht tra#e&s in one year. o' many meters are therein one &i ht
year:
(a) 4.? 9 10-1? m
(!) 4.? 9 101? m
(c) 4.? 9 101? cm
(d) 4.? 9 101? km
'''.8ay2Learn.com Pa e > o 7
Inter (Part-1) Lahore Board 201> Nroup 1
Physics Paper: 1
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Time: ;.10 ours Marks: 5;
( ssay Type)
$ote: ut o 3. $o. 1 2 ; and > 'rite any T'enty-T'o (22) short ans'ers. hi&e'ritin ans'ers
3. $o. and its part care u&&y. ach part carries t'o marks. >>
8 *TI $ -1
32. rite short ans'ers to any 5 ,uestions. 1
1) rite the dimensions o : (a) Pressure (!) +ensity.
2) o' many nanoseconds are in one year
;) $ame se#era& repetiti#e phenomenon occurrin in nature 'hich cou&d ser#e asreasona!&e
time standard.
>) hat do you mean !y scienti/c notation i#e an e9amp&e
?) +e/ne the terms:
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(a) `nit #ector (!) Position #ector
) *an a ma nitude o a #ector ha#e a ne ati#e #a&ue
7) hy do you keep your &e s ar apart 'hen you ha#e to stand in the ais&e o a!umpy ridin
!us
5) hat is the di=erence !et'een uni orm and #aria!&e #e&ocity Ni#e 8.I units o
#e&ocity and
acce&eration.
4) *an the #e&ocity o an o!"ect re#erse the direction 'hen acce&eration is constant
10)+e/ne impu&se and sho' that ho' it is re&ated to &inear momentum.
11) hy is it use u& to use a sa ety he&met
12) 9p&ain 'hat do you understand !y the term #iscosity and i#e its 8.I unit.
3;. rite short ans'ers to any 5 ,uestions. 1
1) +e/ne escape #e&ocity. rite its #a&ue.
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2) *a&cu&ate the 'ork done in ki&o "ou&es in &i tin a mass o 10 k (at a steady#e&ocity) throu h
a #ertica& hei ht o 10 m.
;) 8tate &a' o conser#ation o ener y.
'''.8ay2Learn.com Pa e ? o 7
>) 9p&ain the di=erence !et'een tan entia& #e&ocity and an u&ar #e&ocity.
?) 9p&ain ho' many minimum num!er o eo-stationary sate&&ites are re,uired or&o!a&
co#era e o T.K. transmission.
) hy does a di#er chan e his !ody position !e ore and. a ter di#in in the poo&
7) `nder 'hat conditions does the addition o t'o simp&e harmonic motions producea
resu&tant 'hich is a&so simp&e harmonic
5) +oes re,uency depend on amp&itude or harmonic osci&&ators
4) hat is meant !y phase an &e +oes it de/ne an &e !et'een ma9imumdisp&acement and the
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dri#in orce
10) o' are !eats use u& in tunin musica& instruments
11) 9p&ain 'hy sound tra#e&s aster in 'arm air than in co&d air.
12) o' shou&d a sound source mo#e 'ith respect to an o!ser#er so that there,uency o its
sound does not chan e
3>. rite short ans'ers to any ,uestions. 12
1) `nder 'hat conditions t'o or more sources o &i ht !eha#e as coherent sources
2) hat is uy en_s Princip&e
;) hy the Po&aroid sun &asses are !etter than ordinary sun &asses
>) hat is simp&e microscope rite do'n the e,uation or its ma ni yin po'er.
?) hy 'ou&d it !e ad#anta eous to use !&ue &i ht 'ith a compound microscope
) +eri#e *har&es_ &a' rom kinetic theory o ases.
7) hy does the pressure o a as in a car tyre increase 'hen it is dri#en throu hsome
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distance
5) 8peci/c heat o a as at constant pressure is reater than speci/c heat atconstant #o&ume.
hy
4) Ni#e an e9amp&e o a natura& process that in#o&#es an increase in entropy.
8 *TI $ R II
$ote: ttempt any T < ,uestions.
3?. (a) +e/ne sca&ar product 'rite do'n its any our characteristics. ?
(!) T'o !&ocks o masses 2.0 k and 0.?0 k are attached at the t'o ends o acompressed
sprin . The e&astic potentia& ener y stored in the sprin is 10 F. %ind the #e&ocities othe
!&ocks i the sprin de&i#ers its ener y to the !&ocks 'hen re&eased. ;
3 . (a) 8ho' that 'ork done in ra#itationa& /e&d is independent o path o&&o'ed. ?
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(!) !ody o moment o inertia (I C 0.50 G m2) a!out a /9ed a9is rotates 'ithconstant
an u&ar #e&ocity o 100 rad s[1
this motion. ;
37. (a) +e/ne and e9p&ain inter erence o sound 'a#es. hat are its kinds conditions ?
(!) !&ock o mass >.0 k is dropped rom a hei ht o 0.50 m onto a sprin o sprin
constant G C 14 0 $m-1
compressed. ;
35. (a) 9p&ain di=raction o -rays !y crysta&s. ?
(!) te&escope is made o an o!"ecti#e o oca& &en th 20 cm and an eye piece o?.0 cm
!oth con#e9 &enses. %ind the an u&ar ma ni/cation. ;
34. (a) 8tate and deri#e Bernou&&i_s e,uation or idea& Huid. ?
(!) heat en ine per orms 100 F o 'ork and at the same time re"ects >00 F o heatener y to
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co&d reser#oir. hat is the e\ciency o the en ine
. *a&cu&ate its an u&ar momentum OLJ and tor,ue to sustain
. %ind the ma9imum distance throu h 'hich the sprin 'i&& !e
Inter (Part-1) Lahore Board 201> Nroup 2
Physics Paper: 1
Time: 20 Minutes Marks: 17
( !"ecti#e Type)
$ote: %our possi!&e ans'ers B * and + to each ,uestion are i#en. The choice'hich you think
is correct /&& that circ&e in ront o that ,uestion 'ith Marker or Pen ink. *uttin or/&&in t'o or
more circ&es 'i&& resu&t in ero mark in that ,uestion. rite the &etter B * or + inthe co&umn
('rite correct option) a ainst each ,uestion a&so. I there is a contraction in the!u!!&e and hand
'ritten ans'er !u!!&e option 'i&& !e considered correct.
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31. 17
1. I a strin is /9ed at !oth ends #i!rates in OnJ &oops then 'a#e-&en th in term o&en th O&J o
strin is i#en !y :
(a) n&62
(!) &62n
(c) 2&6n
(d) 2&6#
2. The process o con/nin the !eam o &i ht to #i!rate in one p&ane is ca&&ed:
(a) Inter erence
(!) +i=raction
(c) Po&ari ation
(d) Tota& interna& reHection
;. !u&&et shot strai ht up returns to its startin point in 10 sec. Its initia& speed 'as:
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(a) 4.5 ms-1
(!) 2>.? ms-1
(c) >4 ms-1
(d) 45 ms-1
>. I ma ni yin po'er o ma ni yin &ass is ; then oca& &en th 'i&& !e:
(a) 2? cm
(!) 12.? cm
(c) ? cm
(d) ; cm
?. ei ht o a 0 k man in mo#in e&e#ator (do'n'ard) 'ith constant acce&erationo (162) ( C
10ms-2) :
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(a) Aero
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(!) ;00 $
(c) 00 $
(d) 200 $
. The kinetic theory o ases su ests the a#era e kinetic ener y per mo&ecu&e is.
(a) (1 2)GT
(!) GT
(c) (;62)GT
(d) 2GT
7. The ratio o or!ita& #e&ocity to escape #e&ocity is :
(a) Y2
(!) 1
Y2
(c) 162
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(d) 2
5. <esu&tant o t'o perpendicu&ar #ector o e,ua& ma nitude (8ay ) 'i&& !e:
(a) (!) 2 (c) Y2 (d)
4. In order to produce !eats the t'o sound 'a#es shou&d ha#e:
(a) The same amp&itude
(!) 8&i ht&y di=erent amp&itude
(c) The same re,uency
(d) 8&i ht&y di=erent re,uencies
10. hen 'a#e is reHected rom the !oundary o denser medium then phase o'a#e chan es !# :
(a) 0
(!) 40
(c) 150
(d) 270
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11.The &a' o conser#ation o ener y is the !asis o :
(a) 8tream &ine Ho'
(!) ,uation o continuity
(c) Bernou&&i_s e,uation
(d) Kenture re&ation
12. hen a !a&& is thro'n strai ht up. the acce&eration at its hi hest point is :
(a) `p'ard
(!) +o'n'ard
(c) Aero
(d) ori onta&
1;.The radian is e,ua& to :
(a) 2f re#
(!) f6> re#
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(c) f62 re#
(d) 162f re#
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1>. !ody o mass 1.0 k drops rom the top o a to'er o hei ht ?0 m 'hat 'i&& !eits G. . 10m
!e&o' the top :
(a) >40 F (!) >4 F (c) 45 F (d) 450 F
1?. hen one mirror o a Miche&son Inter erometer is mo#ed a distance o 0.? mm2000 rin es
are o!ser#ed. The 'a#e &en th o &i ht used is :
(a) ?000 m
(!) ?000
(c) ?00 cm
(d) 2000
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1 .The optica& /!er is co#ered or protection !y a :
(a) N&ass Facket
(!) P&astic Facket
(c) *opper Facket
(d) &uminium Facket
17. %or tota& assessment o uncertainty in the /na& resu&t o!tained !y mu&tip&icationand di#ision :
(a) !so&ute uncertainties are added
(!) %ractiona& uncertainties are added
(c) ] a e uncertainties are added
(d) rror are added
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Inter (Part-1) Lahore Board 201> Nroup 2
Physics Paper: 1
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Time: ;.10 ours Marks: 5;
( ssay Type)
$ote: ut o 3. $o. 1 2 ; and > 'rite any T'enty-T'o (22) short ans'ers. hi&e'ritin ans'ers
3. $o. and its part care u&&y. ach part carries t'o marks. >>
8 *TI $ -1
32. rite short ans'ers to any 5 ,uestions. 1
1) +e/ne Physics $uc&ear Physics.
2) o' many seconds are there in 1 year
;) rite the dimensions o : (a) Pressure (!) +ensity
>) Ni#e the dra'!acks to use the period o a pendu&um as a time standard.
?) +e/ne $u&& Kectors ,ua& Kectors.
) *an you add ero to a nu&& #ector
7) Is it possi!&e to add a #ector ,uantity to a sca&ar ,uantity 9p&ain.
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5) 8tate $e'ton_s 8econd and Third La' o Motion.
4) 9p&ain the circumstances in 'hich the #e&ocity # and acce&eration a o a car are :
(a) Para&&e&
(!) nti-para&&e&.
10) t 'hat point or points in its path does a pro"ecti&e ha#e its minimum speed itsma9imum
speed
11) 8ho' that the ran e o pro"ecti&e is ma9imum 'hen pro"ecti&e is thro'n at anan &e o >?
'ith the hori onta&.
12) hy o drop&ets appear to !e suspended in air
3;. rite short ans'ers to any 5 ,uestions. 1
1) ir& drops a cup rom certain hei ht 'hich !reaks into pieces. hat ener ychan es are
in#o&#ed
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2) *a&cu&ate the 'ork done in ki&o"ou&es in &i tin a mass o 10 k throu h a #ertica&hei ht o
10m.
;) +e/ne the term po'er and its 8 I. unit.
>) hen mud Hies o= the tyre o a mo#in !icyc&e in 'hat direction does it Hy
?) hat is meant !y an u&ar momentum
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) hat is Neo-8tationary 8ate&&ite
7) *an 'e rea&i e an idea& simp&e pendu&um
5) hat happens to the period o simp&e pendu&um i its &en th is dou!&ed hathappens i its
mass is dou!&ed
4) +escri!e some common phenomena in 'hich resonance p&ays an important ro&e
10) hat eatures do &on itudina& 'a#es ha#e in common 'ith trans#erse 'a#es
11) hy does sound tra#e& aster in so&ids than in ases
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12) +escri!e !rieHy a!out nodes and antinodes.
3>. rite short ans'ers to any ,uestions. 12
1) *ou&d you o!tain $e'ton_s rin s 'ith transmitted &i ht I yes 'ou&d the pattern!e di=erent
rom that o!tained 'ith reHected &i ht
2) o' 'ou&d you distin uish !et'een p&ane-po&ari ed &i ht and unpo&ari ed &i ht
;) +e/ne : (a) ray o &i ht (!) a#e ront
>) rite do'n the names o the essentia& components o a spectrometer.
?) 9p&ain the di=erence !et'een an u&ar ma ni/cation and reso&#in po'er o anoptica&
instrument.
) 8ketch the ray dia ram o a compound microscope.
7) +eri#e the *har&es_ &a' rom kinetic theory o ases.
5) Is it possi!&e to con#ert interna& ener y into mechanica& ener y 9p&ain 'ith ane9amp&e.
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4) +oes entropy o a system increase or decrease due to riction
8 *TI $ R II
$ote: ttempt any T < ,uestions.
3?. (a) +e/ne e&astic and ine&astic co&&ision. 9p&ain e&astic co&&ision in onedimension to sho'
the re&ati#e #e&ocities !e ore and a ter co&&ision are same. ?
(!) 8ho' that the three #ectors i E " E k 2i-;" E k and >i E "-?k are mutua&&yperpendicu&ar. ;
3 . (a) hat is a conser#ati#e /e&d 8ho' that a ra#itationa& /e&d is a conser#ati#e/e&d. ?
(!) ramophone record turn ta!&e acce&erate rom rest to an an u&ar #e&ocity >?.0re# min-1
in 0 8. hat is its a#era e an u&ar acce&eration ;
37. (a) +e/ne simp&e harmonic motion. Pro#e that pro"ection o partic&e mo#in in acirc&e a&on
#ertica& diameter is a 8 M. ?
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(!) The re,uency o note emitted !y a stretched strin is ;00 . hat 'i&& !e there,uency
o this note 'hen the tension is increased !y one-third 'ithout chan in the &en tho the
'ire ;
35. (a) +e/ne microscope. +eri#e re&ation or ma ni yin po'er o compoundmicroscope. ?
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(!) Li ht is incident norma&&y on a ratin 'hich has 2?00 &ines per centimeter.*ompute
'a#e&en th o spectra& &ine or 'hich the de#iation in second order is 1? . ;
34. (a) +e/ne termina& #e&ocity sho' that termina& #e&ocity is direct&y proportiona&to the s,uare
o radius o the drop&et. ?
(!) stimate the a#era e speed o nitro en mo&ecu&es in air under standard
conditions o
pressure and temperature. ;
(8 *TI $-III)
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(Practica& Part)
( ) ttempt any our ,uestions. 5
i. hat-is ero-error
ii. hat is meant !y the pitch o a scre' .u e
iii. hat is simp&e pendu&um
i#. 8tate ook_s &a'.
#. hat is moment arm
#i. hat type o #i!rations are set up in the 'ire o. sonometer
#ii. hat is end correction
#iii. hat are conditions or tota& interna& reHection
(B) rite a !rie procedure o the e9periment to measure diameter o - a 'ire 'ith a
scre' au e
and then ca&cu&ate its area o cross-section. ;
<
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rite a !rie procedure o e9periment to /nd re racti#e inde9 o materia& o prism !ycritica& an &e
method.
(*) ns'er the o&&o'in ,uestions on !asis o raph :
(i) %ind oca& &en th o &ens.
(ii) %or a #a&ue o 16p C 0.07cm0 /nd #a&ue o 16, C