2021re special sap (2021-03-22) mcq final

- 1 -

ADVANCED LEVEL - PHYSICS - AMITH PUSSELLA

AL/2021REVISION/SPECIAL SAP 01

1. mSvkfha tallj,g iudk tall mj;sk fN!;sl rdYshla jkafka"(1)>k;ajh (2)talSh ialkaOhl pd,l Yla;sh (3) hx udmdxlh(4)j¾. uOHkH m%fõ.h (5);r,h m%jdyh ùfï iS>%;djh

2. ir, wkqj¾;S p,s;hl fhfok jia;=jla iïnkaOj ksjerÈ j.ka;sh jkafka"(1)uOH msysàfï § uq¿ hdka;%sl Yla;sh Y=kH fõ'(2)Wmßu úia:dmkh we;s fudfydf;a uq¿ hdka;%sl Yla;sh Y=kH fõ'(3)uOH msysàfï § ;ajrKh Y=kH fõ'(4)Wmßu úia:dmkh we;s fudfydf;a iïm%hqla; n,h Y=kH fõ'(5)Wmßu úia:dmkh we;s fudfydf;a m%fõ.h uOH msysàfï m%fõ.hu fõ'

3. fudag¾ r:hla taldldr ;ajrKfhka .uka lrk úg"(A) r:fha fõ.h iEu ;;amrhlgu tlu w.hlska jeäfõ'(B) m%fõ.fha ÈYdj fjkiaúh fkdyel'(C) r:fha fõ.h fjkia fkdù .uka ÈYdj fjkia úh yel'

ñka i;H jkafka"(1) (A) yd (B) muKs' (2) (A) yd (C) muKs' (3) (C) muKs'(4)ish,a,u fõ' (5) ish,a,u fkdfõ'

01

2021

2021

2021

07

SPECIAL

S

A

P

4. èjks m%Njhl isg hï ÿrl èjks ;Sj%;d uÜgu 80 dB fõ' èjks ;Sj%;d uÜgu 60 dB i|yd m%Njfha isg ;sìh hq;=ÿr fmr ÿr fuka(1)fo.=Khls' (2) oi .=Khls' (3) úis.=Khls'(4)ish.=Khls' (5) foiSh .=Khls'

25

25

ud;rud;rud;rud;rud;r

meh tlhsmeh tlhsmeh tlhsmeh tlhsmeh tlhsOne hour

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5. klaI;% ÿf¾laIh iïnkaOj my; m%ldY i,ld n,kak'(A) wjfk; È.= kdNsh ÿrla iy Wmfk; flá kdNsh ÿrla iys; W;a;, ldpj,ska iukaú; fõ'(B) idudkH iSreudrefõ § wjidk m%;sìïnh wkka;fha ,nd foa'(C) idudkH iSreudrefõ § wjidk m%;sìïnh ;d;aúl tlls'

ñka i;H jkafka"(1) A yd B muKs' (2) B yd C muKs' (3) B muKs'(4)ish,a,u fõ' (5)ish,a,u fkdfõ'

6. X kï jia;=jlg hï ;dm m%udKhla iemhSu ksid tys WIaK;ajh 20 0C lska jeäúh' Y jia;=fõ ialkaOh X f.aialkaOh fuka fo.=Khla jk w;r" X g iemhQ ;dmhg iudk ;dm m%udKhla Y f.ka bj;a l< úg" Y f.aWIaK;ajh 10 0C lska wvqúh'

X idod we;s øjHfha úYsIag ;dm Odß;djiudk jkafka"

Y idod we;s øjHfha úYsIag ;dm Odß;dj

(1) 1 (2) 1

(3) 2 (4) 1

(5) 4 2 4

7. by< ;sria iS,sula Èf.a p,kh jk mßÈ 5.0 kg ialkaOh u; rEmfhamßÈ 60 √2 N n,hla ;srig 450 l wdk;shlska fhdokq ,efí' iS,su ydialkaOh w;r pd,l >¾IK ix.=Klh 0.5 la kï" ialkaOfha ;ajrKhjkafka"(1) 12.0 ms-2 (2) 11.0 ms-2 (3) 8.0 ms-2

(4) 6.0 ms-2 (5) 5.0 ms-2

450

60√2N

8. fok ,o mßm:fha we;s fldaIfha úoHq;a .dul n,h 8 V o" wNHka;rm%;sfrdaOh r = 2 Ω o fõ' tys wNHka;r m%;sfrdaOh yryd laIu;dW;ai¾ckh jkafka"(1) 1 W (2) 2 W (3) 4 W

(4) 6 W (5) 8 W

9. fudag¾ r: ghrhla ;=< 1.5 x 10-2 m3 mßudjla ,nd.kakd jQ jd;fha wdudk mSvkh 1.4 x 105 Pa jkúg" WIaK;ajh27 0C la jk ldur WIaK;ajh fõ' wêfõ.S ud¾.hl §¾> .ukla wjidkfha ghrh ;=< jd; mßudj1.6 x 10-2 m-3 olajd by< .sh w;r WIaK;ajh o 47 0C olajd jeäjQfha kï" ta ;=< kj wdudk mSvkh fldmuK o@^jdhqf.da,Sh mSvkh 105 Pa fõ'&(1) 1.4 x 105 Pa (2) 1.6 x 105 Pa (3) 1.8 x 105 Pa (4) 2.4 x 104 Pa (5) 3.0 x 105 Pa

10. fldgila lmd bj;a l< miq ,efnk j<,a,l flakaøfha ;nk mialkaOh u; tu j<,a, ksid ,efnk .=re;ajdl¾IK n,h F

0

fõ' j<,a, ;kd we;s øjHfhkau tu >kluu we;s pdm fldgila(2) rEmfha mßÈ ;enQúg ta ish,a, tlu ;,fha kï" m ialkaOhu; kj iïm%hqla; .=re;ajdl¾IK n,h

(1) F0

(2) Y=kH fõ' (3) F

0

2

(4) 3 F

0 (5) F

0

4 4

(1)

(2)

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12. rEmfha fmkajd we;s o;a; Wmfhda.S lrf.k q úoHq;awdfrdamKfha úYd,;ajh .Kkh l<úg ,efnk w.h jkafka"(1/4πε

0 = 9 x 109 Nm2 C-2)

(1) 1 1/2

x 10-5 C (2) (√3)1/2 x 10-5 C 3

(3) 1 1/2

x 10-5 C (4) 1 1/2

x 10-5 C √3 9√3

(5) (3 √3) 1/2 x 10-5 C

q q+ -

300 300

1 m1 m

0.1N 0.1N

2 m

( )

( ) ( )

A øjh B øjh

11. X f.da,h ;ka;=jlska A yd B øj folla ;=<" rEmj, mßÈ t,ajd;ndf.k we;súg tys oDYH nr iudk fõ' X , A yd B j, >k;ajhkaρ

X , ρ

A yd ρ

B kï" tajd w;r ksjerÈ iïnkaOh jkafka"

(1) ρX = ρ

A + 2 ρ

B(2) ρ

X = 2 ρ

A + ρ

B

(3) ρA = 2 ρ

B(4) ρ

B = 2 ρ

A

(5) ρX = 1/2 ρ

A

15. mDÓúh jgd we;s X yd Y pkaøsld folla iïnkaOj lr we;smy; m%ldY i,ld n,kak'

(A) X f.a fõ.h Y f.a fõ.hg jvd úYd, fõ'(B) X f.a wdj¾; ld,h Y f.a wdj¾; ld,hg jvd wvqfõ'(C) X f.a uq¿ hdka;%sl Yla;sh Y f.a uq¿ hdka;%sl Yla;shg

jvd wvqfõ'ñka i;H jkafka"(1) A yd B muKs' (2) A yd C muKs' (3) B yd C muKs'(4)ish,a,u fõ' (5)ish,a,u fkdfõ'

Y

X

m DÓúhm DÓúhm DÓúhm DÓúhm DÓúh

13. X yd Y iudk mßud we;s n÷ka foflys jdhq wKqjl uOHhl pd,lYla;Ska .;aúg" X ;=< tu rdYsh Y ;=< tu rdYsh fuka fo.=Khla fõ'ta ms<sn|j olajd we;s my; m%ldY i,ld n,kak'

(A) n÷ka foflys tlu jdhq j¾.h ;sìh fkdyel'(B) X n÷fka WIaK;ajfha fl,aúka w.h Y ys tu w.h fuka

fo.=Khls'(C) X ;=< jdhq wKq .Kk" Y ;=< we;s wKq .Kkg jvd jeäúh

hq;=h'ñka i;H jkafka"(1) A yd B muKs' (2) A yd C muKs' (3) B muKs'(4)ish,a,u fkdfõ' (5)ish,a,u fõ'

123456123456123456123456123456

1234567123456712345671234567123456712345671234567

12345123451234512345123451234512345

123456123456123456123456123456123456123456

hlv

,S

l=yr

14. mßudj 2.5cm3 ne.ska jQ hlv f.da, 4la we;s" we;=<; l=yr mßudj 30cm3

o jk uq¿ ndysr mßudj 100cm3 la jQ ,S f.da,hla we;' ,Sj, >k;ajh 600

kgm-3 o hlvj, >k;ajh 4000 kgm-3 o jk úg tu f.da,h" c,h ;=< we;súg .sf,k mßudj" uq¿ mßudjg ork wkqmd;h"(1) 0.68 (2) 0.70 (3) 0.72

(4) 0.76 (5) 0.82

yß wvlaA øjh ;=<.s,S we;'

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17. Odjk ;r`. i|yd Ndú;d lrk fudag¾ r:j," r:j,g my<ska we;= jk jd; m%jdyfha isria yrialv j¾.M,h A0

o" X ia:dkfha mSvkh jdhqf.da,Sh mSvkh jk P0 o fõ' r:fha peishg my<ska yd fmd<j w;r we;s m%foaYfha isria

yrialv j¾.M,h A1 (< A

0) jkúg" tu Y ia:dkfha mSvkh P

1 hehs f,i Wml,amkh lrkak' fufia yrialv

j¾.M,h wvqùu ksid Y ia:dkfha mSvkh" P1 olajd fjkia ùu ksid"

(A) r:h u; nrg wu;rj" mSvk fjkig wkqrEmj" isriaj my<g n,hla we;sfõ'(B) r:fha frdao yd Odjk m:h w;r iSudldÍ >¾IK ix.=Klh jeälrhs'(C) túg blauKska yd jeä fõ.j,ska ,siaiSulska f;drj jx.= .ekSug yelshdjla ,efí'

ñka i;H jkafka"(1) A yd B muKs' (2) A yd C muKs' (3) B yd C muKs'(4)ish,a,u fõ' (5)ish,a,u fkdfõ'

fudag¾ r:h

fmd<j^jd'f.da'mS&

16. wfhla zzwúÿr oDIaál;ajhZZ kï oDIaá fodaIhlska fmf<;s' ta iïnkaOj lr we;s my; m%ldY i,ld n,kak' túg"(A) hï mßñ; ÿrlska tyd we;s jia;= meyeÈ,sj fkdfmfka'(B) Bg ms<shï f,i m<`Èk ldph wj;, tlla fõ'(C) m<¢k ldpfha kdNsh ÿr" m<¢k ldpfha isg th fkdm<¢k úg ÿr ,laIHhg we;s ÿrg iudk fõ'

ñka i;H jkafka"(1) A yd B muKs' (2) A yd C muKs' (3) B yd C muKs'(4)ish,a,u fõ' (5)ish,a,u fkdfõ'

18. øjH ;=klska ;ekQ i¾jiu ñkqï we;stla tla ys È. 2L jk f,day l=Üá ;=klai,lkak' tla tla l=Üáfha taldldryrialv j¾.M,hkaf.ka hqla; jQ fldgiafollska iukaú; jk w;r tla fldgilj¾.M,h wfkla fldgfia j¾.M,h fukafo.=Khla fõ' bÈßmi fl<jr 100 0C

yd wfkla fl<jr 16 0C la jk wkjr;WIaK;ajhka ys ;ndf.k iïmQ¾Kf,dayhu fyd¢ka ;dmc f,i wyqrd we;'tys § wkjr; wjia:dfõ § ;ekska ;ekWIaK;aj jHdma;sh m%ia;drfha mßÈ úh'f,day l=Üá ;=fka ;dm ikakdhl;djkaysw.hka ms<sfj,ska k

1, k

2 yd k

3 kï" k

1, k

2

yd k3 w;r ksjerÈ iïnkaOh olajd we;s

ms<s;=r jkafka"(1) k

1 = 2k

2 = 4k

3

(2) 4k1 = 2k

2 = k

3

(3) 2k1 = k

2 = 4k

3

(4) k1 = k

2 = k

3

(5) 4k3 = k

2 = 2 k

3

x x

x x

x x

x x

x x

x x

x x

x x

x x

x x

x x

x x

x x

x x

x x

x x

x x

x x

x x

x x

x x

x x

x x

x x

x x

1234512345123451234512345

x x

x x

x x

x x

x x

123456123456123456123456123456123456123456123456123456

123456123456123456123456123456

123456712345671234567123456712345671234567123456712345671234567

12345678123456781234567812345678

1234567812345678123456781234567812345678123456781234567812345678123456781234567812345678

k1

k3

160 C1000 C

L L L L L L

k2

k1

k2

k3

0 L 2L 3L 4L 5L 6L

16

48

64

7276

92

100

θ/ 0C

8

16

8

16

32

4

P0

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19. hï mßir moaO;s ;=kl WIaK;ajhka ms<sn|j olajd we;s my; j.ka;s i,ld n,kak'

(A) óÿu we;sjk úg tu wjg mßir WIaK;ajh'

(B) le,ßógrhl we;s c,h ;=<g whsia leg tl;= lrñka hkúg le,ßógrfha msg; mDIaGfha ;=Idr

;ekam;a jkúg le,ßógrfha msg; mDIaGfha WIaK;ajh'

(C) Wmeia hqj<la me<|f.k isá flfkla jdhqiukh lr we;s fudag¾ r:hlska ìug nisk fudfydf;a Wmeia

hqjf,a ldp mDIaaGj, ;=Idr ;ekam;a jkúg" fudag¾ r:fhka msg; mßirfha WIaK;ajh'

by; (A), (B) yd (C) w;ßka l=uk mßir moaO;sj, WIaK;ajhka" tu mßirfha ;=Idr wxlhg jvd wvq fõ o@

(1) A yd B muKs' (2) B yd C muKs' (3) B muKs'

(4)ish,a,u fõ' (5)ish,a,u fkdfõ'

20. jd;h yd ùÿre udOH fol i|yd wjê fldaKh 420 ls' rEmfha

mßÈ PQ u; m;k fldaKh θ jk lsrKhla i,lkak'

(A) θ ys iEu w.hlgu PQ ys§ j¾;k lsrKhla mj;S'

(B) θ ys hï fldaKhlg jvd jeä w.hka i|yd QR ys§ mQ¾K

wNHka;r mrdj¾;kh fõ'

(C) ish¿u θ i|yd tu lsrKh QR ys§ ùÿre ;=<g we;=¿ fõ'

ñka i;H jkafka"

(1) A muKs' (2) A yd B muKs'

(3) A yd C muKs' (4) B muKs'

(5) ish,a,u fkdfõ'

+q -3q

-2q+q

-2q

+3q

21. wdfrdamK jHdma;shla we;s m%foaYhl we;s S ixjD; .jqia mDIaGh yryd úoHq;a

i%djh φ fõ' ta ms<snòj lr we;s m%ldY w;=ßka my; l=uk j.ka;sh i;H jkafka

o@

(1) S ;=< we;s -3q , S f.ka bj;a l<úg S yryd úoHq;a i%djh fmr ÈYdjgu φ/2 la

fõ'

(2) S ;=<g msg; we;s ishü wdfrdamK f.k wdúg" S yryd úoHq;a i%djh fmr

ÈYdjgu úoHq;a i%djh 1.5 φ fõ'

(3) S ;=< we;s ishü wdfrdamK bj;g f.k msg; wdfrdamK ta ;=<g f.k wdúg"

S yryd úoHq;a i%djh fmr ÈYdjg úreoaO w;g" φ/3 la fõ'

(4) S ;=< - 2q bj;g f.k" msg; + 3q ta ;=<g f.k wdúg S yryd úoHq;a i%djh

Y=kH fõ'

(5) S ;=< we;s ishü wdfrdamK S ys flakaøh fj;g f.k wd úg S yryd úoHq;a

i%djh fmr ÈYdjgu φ g jvd wvqfõ'

S

jd;h

ùÿre

- 6 -



00C 40C 70C WIaK;ajh/0C

c,fha >k;ajh

U

(1)

4 7 θθθθθ/0C0

U

(4)

4 7 θθθθθ/0C0

U

(2)

4 7 θθθθθ/0C0

U

(5)

4 7 θθθθθ/0C0

U

(3)

4 7 θθθθθ/0C0

22.

c,fha >k;ajh 0 0C isg WIaK;ajh 7 0C olajd fjkiajk wkaou m%ia;drfha mßÈ fõ' 0 0C § c,fha wvla .s,S we;s,S j,ska ;ekQ jia;=jla iys; c, îlrhl WIaK;ajh 0 0C isg 7 0C olajd r;alrk ,È' 7 0C §;a th c,fha fldgila.s,S mdfõ kï" WIaK;ajh iu. th u; Wvql=re f;rmqu (U) fjkiajk m%ia;drh o< jYfhka"

23. úoHq;a .dul n,h 12.0 V jk mßmQ¾K negßhla iu`. R1 yd

R2 m%;sfrdaO folla yd R

3 úp,H m%;sfrdaOhla mßm:hl we;'

tys R3 w.h 0 isg b;d úYd, w.hla olajd úp,kh lrk úg"

R3 yd negßh u`.ska mßm:hg iemfhkq ,nk i Odrdj R

3

iu`. úp,kh jk wdldrh my; m%ia;drfha mßÈ úh'R

3 → ∞ jkúg" i → 2 mA fõ'

R1 yd R

2 m%;sfrdaO fol jkafka"

(1) R1 = 2 kΩ ; R

2 = 2 kΩ (2) R

1 = 2 kΩ ; R

2 = 6 kΩ (3) R

1 = 4 kΩ ; R

2 = 8 kΩ

(4) R1 = 2 kΩ ; R

2 = 4 kΩ (5) R

1 = 3 kΩ ; R

2 = 3 kΩ

6

5

4

3

2

1

i/mA

E = 12.0 V

R1

R3

i

50 1510 2520 3530 R3/kΩ

R2

- 7 -



24. tlu ialkaOh yd tlu ndysr wrh we;s ;eáhla" j<,a,la yd f.da,hlai,lkak' rEmfha olajd we;s mßÈ ta tla tla jia;=fjys lvodish ;=<gwe;s" tajdfha flakaøh yryd hk" wlaIhka jgd N%uKh jk fia tajdfhamßêh jgd T;d we;s wú;kH ;ka;=jla u`.ska ksh; F wd;;s n,hlafmkajd we;s ÈYdjgu t ld,hla l%shd lrhs' wdrïNfha § ta ish,a,ksYap,j ;snqfKa kï"

(A) tajdfha wjiaÓ;s >Q¾Khka If.da,h

< I;eáh

< Ij<,a,

fõ'(B) t ld,hlg miq tajdfha fldaKsl .uH;djhka L

j<,a, < L

;eáh < L

f.da,h

(C) t ld,hlg miq tajdfha fldaKsl m%fõ.hka ωj<,a,

< ω;eáh

< ωf.da,h

fõ'ñka i;H jkafka"(1) A yd B muKs' (2) A yd C muKs' (3) A muKs'(4)ish,a,u fõ' (5)ish,a,u fkdfõ'

;eáh j<,a, f.da,h

25. iqug ;,hl ksYap,j we;s ialkaOh m jQ B jia;=jla yd rEmfhamßÈ B fj;" ;sriaj V fõ.fhka tk ialkaOh m jQ A jia;=jla.efÜ' tajd .eàfuka fudfyd;lg miq A yd B f.a .uka ÈYdjkarEmfha fmkajd we;s mßÈ fõ' .eàu m%;Hdia: tlla kï"

(A) θ = 300 la fõ'(B) V

1 < V

2 fõ'

(C) B uq,ska ksYap,j ;snQ ksid .eàfuka miq B f.a pd,lYla;sh" .eàfuka miq A f.a pd,l Yla;shg jvd jeäúhfkdyel'

ñka i;H jkafka"(1) A muKs' (2) A yd B muKs'(3) A yd C muKs' (4) B muKs'(5) C muKs'

υ

- 8 -



fuu

;srfha

lsisjla

fkd ,shkak

1. 00 - 3600 fldaKudkhl Pdhd msgm;la u; j¾;kdxlh fiúh hq;= iDcqfldaKdi%dldr ùÿre l=Üáh;nd we;s wkaou rEmfha ±lafõ' tu ùÿre l=Üáfha udhsï f¾Ld ,l=Kqlr .ekSfuka miqj th bj;alr OA f¾Ldj we| bkamiq l=Üáh ;nd OA u; P

1 yd P

2 we,afmfk;a;s folla isgqjd tajdg msgqmiska

S ;srh OA g ,ïnlj isriaj ;nd ùÿre l=Üáh ;=<ska n,ñka P1 yd P

2 ys m%;sìïnh iu`. talf¾Çh

jk fia P3 yd P

4 we,afmfk;s fol isgqjk ,È'

(a) (i) S iqÿ ;srfha we;s m%fhdackh l=ulao@

......................................................................................................................................

......................................................................................................................................

......................................................................................................................................

(ii) iqÿiq ks¾udK f¾Ld u.ska A ys§ ùÿre ;=<g we;=¿ ù ùÿre ;=<ska hk j¾;k lsrKfha .uka u. o,jYfhka tys w¢kak'

(iii) tu j¾;k lsrKh fldaKudk mßudKh olajd Èlalr A ys§ m;k fldaKh (i) yd j¾;k fldaKh(r) tys ,l=Kq lrkak'

(iv) ta wkqj i yd r w.hka fol fldmuK o hkak ,shd olajkak'

i = ............................................ r = ............................................

(b) i yd r i|yd w.hka lsysmhla f.k sin i yd sin r fidhd sin i

wkqmd;hkaf.a idudkH ,nd.ekSu sin r

u.ska fyda , sin r iu. sin i fjkiajk m%ia;drfha wkql%uKh u.ska fyda n ^j¾;kdxlh& .Kkhl< yel'

m%Yak folgufolgufolgufolgufolgu ms<s;=re fuu m;%fha um;%fha um;%fha um;%fha um;%fha u imhkak'(g = 10 N kg-1)

;srh

(S)

ùÿre l=Üáh

fldaKudkh

70

60

50

4030

20 10 0 10 20 3040

5060

70

80

90

80

70

60

50

4030

2010

0

102030

4050

607

08

09

0

- 9 -



(i) ñka l=uk l%ufha n w.h ksrjoH w.hg wdikak fõo@

......................................................................................................................................

(ii) Bg fya;=j meyeÈ,s lrkak'

......................................................................................................................................

......................................................................................................................................

......................................................................................................................................

......................................................................................................................................

(c) i yd r w.hka my; j.=fõ mßÈ ,ndf.k we;s wjia:djla i,lkak'

i/0 74 76 78 80 82 84 86 88

r/0 39.80 40.3 40.7 41.0 41.3 41.5 41.7 41.80

(i) tu i w.h iu`. r úp,kh jk m%ia;drh i|yd fuu ,laIHhka my; m%ia;dr fldgfia ,l=Kqlrkak'

fuu

;srfha

lsisjla

fkd ,shkak

r/0

39.00

40.00

41.00

42.00

i/074 76 78 80 82 84 86 88 90

- 10 -



fuu

;srfha

lsisjla

fkd ,shkak

(ii) tu m%ia;drh jl% yevhla fõ' tu ,laIHj,g .e<fmk m%ia;dr yevh tys w¢kak'

(iii) tu m%ia;drh Ndú;fhka ùÿre i|yd wjê fldaKh (C) g w.hla ,nd.kak'

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(iv) tu wjê fldaKh Ndú;d lr úÿre l=Üáfha j¾;kdxlh (n) g w.hla ,nd.kak'

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2. ñY%K l%ufhka >k øjHhl úYsIag ;dm Odß;dj fidhk mÍlaIKhla my; ±lafõ' c, ;dmlhlkgk c,h ;=< fyda yqud,h ;=< fyda ;nk >k jia;=j wkjr; WIaK;ajhg t<UqKq miq yelsblauKska rEmfha fmkajd we;s mßÈ ilia l< le,ßógrh ;=<g oud fyd¢ka uka: lrñka ñY%KfhaWmßu WIaK;ajh uek .ekSu fjkqjg miqld,Skj ;kd.;a zzRegnaultZZ f.a WmlrKh fuys§Ndú;d lrhs' tu.ska ñY%K l%ufha mej;s fodaI lsysmhla tljr u`.yrjd .ekSug yelsúh'

(a) (i) mßjdrl kq,lska t,ajd .;a >k jia;= fmkajd we;s ixjD; ùÿre wkdjrlhla ;=< ;nd r;a lr.ekSfuka u`.yrjd .;a fodaIh l=ula o@

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- 11 -



(ii) fuu mÍlaIKfha § >k jia;=j yd iam¾Yj we;s WIaK;ajudkfha mdGdxlh wkjr; jQ miq B ;yvqjby<g Tijd le,ßógrh iys; wegjqu A ;yvqjg háka isák fia ;,a¨ lr kQ, Ndú;d lr fmrmÍlaIKfha § ;rï blauka fkdù A ;yvqj msg;g f.k fiñka fiñka >k jia;=j le,ßógrfhac,h ;=<g oukq ,efí' c,h iu. ñY%ùug fmr tu >k jia;=fjka wjg mßirhg ydksjk ;dmhie,lsh hq;= uÜgulska fyda fmr uÜgug jvd wvq lr .; yelsúh' fuu ;dm ydkshg wu;rjfulS l%uh Ndú;d lsÍfuka u`.yrjd .;a fjk;a fodaIhla mj;S' th i|yka lrkak'

'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''

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(iii) ,S l=vq ksid ikakhkh u.ska wjg mßirhg ;dm ydksh wju lr .ekSu flfrys ,S l=vqj, ;sfnkúfYaI fN!;sl .=Kh i|yka lrkak'

'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''

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(iv) úlsrKh u.ska ;dm ydksh wju lr .ekSu i|yd le,ßógrfha ndysr mDIaGh fukau th ;nd we;sn÷fka wNHka;r mDIaGh o ta yd iudkj Tm ±fï' tu mDIaG fofla iajNdjh u.ska ;dm úlsrKhwju jk wkaou meyeÈ,s lrkak'

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(b) by; mÍlaIKfha § ,nd.;a mdGdxl my; mßÈ úh'

♦ uka:h iu. ysia le,ßógr ialkaOh = 105 g

♦ uka:h" le,ßógr yd we,a c,fha ialkaOh = 255 g

♦ we,a c,fha WIaK;ajh (θ0) = 25 0C

♦ ;U f.da,hla >k jia;=j f,i f.k WmlrKh= 100 0C

;=< r;a l<úg tys wkjr; WIaK;ajh (θ1)

♦ ;U f.da,h" le,ßógrh" uka:h yd c,fha ialkaOh = 375 g

♦ by; ish,af,a wjidk Wmßu WIaK;ajh = 30 0C

♦ c,fha úYsIag ;dm Odß;dj = 4200 J kg-1 K-1

(i) ;U f.da,fhka bj;a l< ;dmh (Q1) i|yd tys úYsIag ;dm Odß;dj (Ccu) weiqßka m%ldYkhla,shkak'

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fuu

;srfha

lsisjla

fkd ,shkak

- 12 -



(ii) c,h yd uka:h iu. ;U le,ßógrh ,nd.;a ;dmh (Q2) i|yd o" (Ccu) weiqßka fjku m%ldYkhla,nd.kak'

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(iii) by; m%;sM, Ndú;d lr ;Uj, úYsIag ;dm Odß;dj .Kkh lrkak'

'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''

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(c) ñY%K l%uh i|yd le,ßógrh øjhla f,i nyq,j c,h Ndú;d lrkq ,nhs' kuq;a weks,Ska j,c,hg jvd we;s fjkialï folla fya;= lrf.k c,h fjkqjg weks,Ska Ndú;d lf<a kï by;;Uj, úYsIag ;dm Odß;d w.fha ksrjoH;djh jeälr .; yel'

(i) c,hg iudk ialkaOhlau weks,Ska Ndú;d lrk ,o w;r weks,Skaj, úYsIag ;dm Odß;dj c,hgjvd fnfyúka wvqùu ksrjoH;djhg flfia n,mdkafka o hkak fláfhka i|yka lrkak'

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(ii) c,fha jdIamSNjkhg jvd weks,Ska jdIamSNjkh wvqfjka isÿfõ' fuh m%;sM,fha ksrjoH;djhgn,mdk wkaou fláfhka i|yka lrkak'

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fuu

;srfha

lsisjla

fkd ,shkak

- 13 -



3. .=jkahdkd úiska Odjk m:fha § p,s;hg Wmfhda.S lr.;a frdao" th .=jka .;ùfuka miqj hdkfha my<skawe;s frdao /f.k hk fldgi (undercarriage) ;=<g we;=¿ lr.kq ,efí' fuu fldgfia bv m%udKh wjulr .ekSfï fuka u wjysr;djhlska f;drj tajd we;=¿ lr .ekSfï wjYH;djh mj;S' ghr b;d úYd,fõ.j,ska N%uKh jkúg tajdfha úIalïN j, jeäùula isÿfõ' tneúka .=jkahdkd l¾udka;fha § Wla;lreKq iïnkaOj úfYaI wjOdkhla fhduql< hq;= fõ'

(1) rEmfha mßÈ .=jkahdkd j, frdao hq., y;rla tlla miq tlla f,i iúlr we;' fõ.h jeäjk úgúIalïNh jeä ù" frdao tlsfkl iam¾Y ùu j<lajd .ekSu i|yd;a hdkfha (undercarriage) ys bvlv wjulr .ekSu i|yd;a .e<fmk fia ghr hq., w;r hï wju ysveila ;nd .ekSfï wjYH;djh u; isÿlrk ,om¾fhaIKhl m%;sM, my; (2) rEmh u`.ska olajd we;' tys§ tu ysvei (c) (clearance) f,i kï lrk w;rghrj, m<, (width) yd frdaoj, fõ.h wkqj (c) w.h m%ia;drfhka bÈßm;a lr we;'

by; m%;sM, flfrys hdkfha fõ.h fuka u frdaoh u; we;sjk nr hk lreKq u; r\ fkdmj;sk neúkam¾fhaIKd.drh ;=< ghrh muKla f.k tys jD;a;dldr p,s;h muKla isÿlr m%;sM, ,ndf.k we;s neúkam%Yak j,g ms<s;=re iemhSfï § ghrj, jD;a;dldr p,s;h muKla i,lkak'

2021

2021

2021

ysvei

ghrfhaúIalïNh

ghrfha m<,

frdaoh

frdaofha yrialv by<ska neÆúg

m<,/mm

ysvei/mm.=jka hdkfha

fõ.fha jeäùu

- 14 -



(a) i,lk ghrhl úIalïNh 1.0 m la o" m<, 400 mm o kï" my; fmkajd we;s tla tla fõ. j,§ ghrfhafldaKsl m%fõ.hka fldmuK o hkak fidhkak'

V 70 ms-1 80 ms-1 90 ms-1 100 ms-1 110 ms-1

ω

(b) by; ghrfha 100 ms-1 fõ.fha § tu ghrfha odrfha we;s wxY=j, flakaø wNsidÍ ;ajrKh fldmuK o hkakfidhkak'

(c) tu fõ.fha § (100 ms-1) by; ghr hq.,h w;r mj;ajd .;hq;= ysvei (c) fldmuK o@

(d) by; ghrfha fõ.h 100 ms-1 jk úg" odrfha 1 kg l ialkaOhla .;aúg tu m%udKh r|jd ;nd .ekSu i|ydwjYH n,h fldmuK o@

(e) hïlsis .=jka hdkhl ghr hq.,hla w;r ysvei (C) w.h 60 mm kï" ghrj, m<, iu`. hdkh .=jka.;ùu isÿlrk Wmßu fõ.h (maximum take-off speed) fjkiajk m%ia;drfha o, yevh fuys w¢kak' ^by;(2) ys we;s m%ia;drfha fmkajk hdkfha fõ.hka" hdkh .=jka.; jkúg we;s fõ.hka f,i ie,lsh yel'&

(f) ghrhl m<, jeäùu ksid we;s jdishla yd wjdishla i|yka lrkak'

(g) fok ,o .=jka.; ùfï fõ.hl § (a take-off speed) ghrfha odrfha flakaø wNsidÍ ;ajrKh" ghrfhaúIalïNh (d) iu`. flfia fjkiafõ o@

(h) § we;s m%ia;drh we| we;af;a úIalïNh 1.0 m jk ghrhla i|yd h' kuq;a tlS m%ia;dr o;a;hka ´kEuúIalïNhla we;s ghrhla i|yd Ndú;d l< yel' ta wkqj ghrfha úIalïNfhka úIalïNhg fjkia o;a;iys; m%ia;drhka fkd,eîug fya;=j i|yka lrkak'

(i) frdaoj, fõ.h jeäjk úg tys úIalïNh jeäùu ksid .=jka hdkd ksmoùfï § wjodkh fhduql< hq;=ldrKd folla mj;S' tu ldrKd fol by; fþoh weiqßka i|yka lrkak'

2021re special sap (2021-03-22) mcq final

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