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K V No. 1 BATHINDA CANTT The holiday homework for the autumn break for classes 6 th to 12 th ( all sections) is as follows. HOLIDAY HOMEWORK FOR CLASS XII ARTS AND XI ARTS SUBJECT : HISTORY 1. पपपपपपपप 10 पपपपपप पपप पपप I 2. 10 पपपपपपप पप पपपपप पपपपप पपपपपप पपप पप पपपप पपपपपपपपप पप पपपपपपपपप पपपपपप I 3. पपपपपपपपपपप पपपपपपप पप पपपपपप-पपपप पप पपप I 4. पपपप पपपपपपपप पपपप पप पपपप पपप I HOLIDAY HOMEWORK FOR CLASS X-C AND IX-C SUBJECT : HISTORY 1. पपपपपपपप 10 पपपपपप पपप पप पपपपप पपपपप पपपपपपप पप I 2. पपपपपपपप पपपपपपपपप पप पपपपपपपपप पपपपपप I 3. पपपपपपपपपपप पपपपपपप पप पपपपपप-पपपप पप पपप I 4. पपपप पपपपपपपप पपपप पप पपपप पपप I

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Page 1: €¦  · Web viewK V No. 1 BATHINDA CANTT. The holiday homework for the autumn break for classes 6. th. to 12. th ( all sections) is as follows. HOLIDAY HOMEWORK FOR CLASS XII ARTS

K V No. 1 BATHINDA CANTT

The holiday homework for the autumn break for classes 6th to 12th ( all sections) is as follows.

HOLIDAY HOMEWORK FOR CLASS XII ARTS AND XI ARTS

SUBJECT : HISTORY 1. प्रति�दि�न 10 प्रश्न या� करो I2. 10 प्रश्नो का स्वयं लि�खि�� अभ्यास करे और आपने अभि��ावकों के हस्�ाक्षर करवाये I3. अर्ध"वार्षि$%क परीक्षा के प्रश्न-पत्र ह� करे I4. तिकसी ऐति�हालिसक स्थ� का �ौरा करे I

HOLIDAY HOMEWORK FOR CLASS X-C AND IX-C

SUBJECT : HISTORY 1. प्रति�दि�न 10 प्रश्न या� कर स्वयं लि�खि�� परीक्षा �े I2. प्रति�दि�न अभि��ावकों के हस्�ाक्षर करवाये I3. अर्ध"वार्षि$%क परीक्षा के प्रश्न-पत्र ह� करे I4. तिकसी ऐति�हालिसक स्थ� का �ौरा करे I

K V No. 1 BATHINDA CANTT

HOLIDAY HOMEWORK FOR WET

Page 2: €¦  · Web viewK V No. 1 BATHINDA CANTT. The holiday homework for the autumn break for classes 6. th. to 12. th ( all sections) is as follows. HOLIDAY HOMEWORK FOR CLASS XII ARTS

Class VI A,B,C :- Draw and color Diya in scap book.Class VII A,B,C :- Draw a Diya and Decorate it with sparkles and beads etc.

Class VIII A,B,C :- Draw a Deepawali Rangoli design in scrap book and color it.

Class IX A,B,C :- Draw a Rangoli on Deepawali theme on drawing sheet and decorate it with sparkles and beads etc. decorative material .

Class X A,B,C :- Paint a Diya and decorate it with decorative material.

Class XI A,B,C :- Make a Deepawali greeting card and decorate it.

Class XII A,B,C :- Make a Deepawali greeting card and decorate it.

K V No. 1 BATHINDA CANTT

HOLIDAY HOMEWORK MATH

Page 3: €¦  · Web viewK V No. 1 BATHINDA CANTT. The holiday homework for the autumn break for classes 6. th. to 12. th ( all sections) is as follows. HOLIDAY HOMEWORK FOR CLASS XII ARTS

CLASS : XII (A,B,C)

To solve 10 assignments of 30 questions each provided to them in soft copy.

To solve selected problems from book Xam Idea ( Marked)

CLASS : XI (B,C)

To prepare one working model ( use of math in daily life) by each group (3members)

To solve misc exercise from NCERT book.

CLASS : VIII (A)

To prepare one chart on one property from their text book. Revise the topic 2,3,5,7.

K V No. 1 BATHINDA CANTT

HOLIDAY HOMEWORK MATH

CLASS : X (A,B,C)

1. Solve complete Half yearly paper.2. Solve one sample paper.3. Six theorems –(2 times).4. Constructors – ( 1 time ).5. Statistics – Three questions :- Mean ( step deviation ), Median , Mode,

Less than o give , more than o give , to find unknown’s (examples).

K V No. 1 BATHINDA CANTTHoliday home work

Page 4: €¦  · Web viewK V No. 1 BATHINDA CANTT. The holiday homework for the autumn break for classes 6. th. to 12. th ( all sections) is as follows. HOLIDAY HOMEWORK FOR CLASS XII ARTS

Science (Class- VI A & VI B)

1. Write down key words with meaning from chapter 10 to 13 in holiday home work notebook.

2. Write summary points of chapter 10 to 13 in holiday home work notebook.3. Solve complete half yearly question paper of 2018-19 in holiday home work

notebook.

Biology (Class- XII B)

1. Make an investigatory project report on any topic of your choice which is relevant with biology curriculum under heading of the following topics –

a) Topic of investigatory project, b) Certificate, c) Index, d) Acknowledgment, e) Aim,f) Introduction, g) Content of the topic (principle, theory, observation, result), h) Conclusion and i) Bibliography

2. Complete the given assignment in your biology note book provided by email.3. Solve complete half yearly question paper of 2018-19 in your biology note

book.

Biology (Class- XI B)

1. Solve complete half yearly question paper of 2018-19 in new biology note book (for question bank).

2. Complete the given assignment in new biology note book (for question bank) provided by email.

K V No. 1 BATHINDA CANTT

Page 5: €¦  · Web viewK V No. 1 BATHINDA CANTT. The holiday homework for the autumn break for classes 6. th. to 12. th ( all sections) is as follows. HOLIDAY HOMEWORK FOR CLASS XII ARTS

Holiday Homework (Autumn Break)

Accountancy XII Class

1. Half yearly paper2018, three sample papers2. First pre board examination 2016-17,Pre board 2 2017-18,Sample paper of code no

67/23. Project work [ratio analysis]

Business studies XII class

1. Half yearly paper2018, three sample papers2. Sample paper of code no.66/1, 66/2, 66/3 Project work

Accountancy XI Class

1. Half yearly paper2018, Project work 2. Q1 what is accounting? Explain the branches of accounting.3. Q2 Difference between cash basis & accrual basis of accounting4. Q3 Enumerate informational needs of accounting?5. Q4 define gain , Expenses & capital.6. Q5 Prepare journal , Ledger and Trial Balance of Q13,14(NCERT) Cash Book Q9(NCERT)

subsidiary books Q 17(NCERT), BRS Q 5,16(NCERT), Dep. Q 6,10,20,21(NCERT) , Bill OF Exchange Q8(NCERT)

Business studies XI class

1. Half yearly paper2018, 2. Q1 Difference between Business, profession & Employment3. Q2 What is Commerce ? Discuss the activities related to it.4. Q3 Difference B/W Departmental undertaking , Public corporation and Govt.

companies.5. Q4 Discuss the changing role of public sector.6. Q5. Explain banking & its Functions7. Q6 Explain various principles of insurances.8. Q7 Explain any six methods of Digital Payment.9. Q8. Evaluate the need for outsourcing and discuss its limitations.

Project work

K V No. 1 BATHINDA CANTT

Page 6: €¦  · Web viewK V No. 1 BATHINDA CANTT. The holiday homework for the autumn break for classes 6. th. to 12. th ( all sections) is as follows. HOLIDAY HOMEWORK FOR CLASS XII ARTS

Holiday Homework (Autumn Break)

तिव$य :- हिह%�ीकक्षा :- 6th

1. अर्ध"वार्षि$%क परीक्षा का प्रश्न-पत्र अपनी अब्यास पुस्तिस्�का में ह� करे I

कक्षा :- 7th1. अर्ध"वार्षि$%क परीक्षा का प्रश्न-पत्र अपनी अब्यास पुस्तिस्�का में ह� करे I

कक्षा :- 8th1. अर्ध"वार्षि$%क परीक्षा का प्रश्न-पत्र अपनी अब्यास पुस्तिस्�का में ह� करे I

कक्षा :- 9th1. अर्ध"वार्षि$%क परीक्षा का प्रश्न-पत्र अपनी अब्यास पुस्तिस्�का में ह� करे I

कक्षा :- 10th1. अर्ध"वार्षि$%क परीक्षा का प्रश्न-पत्र अपनी अब्यास पुस्तिस्�का में ह� करे I

K V No. 1 BATHINDA CANTT

Holiday Homework (Autumn Break)

Subject : SST

CLASS :- VII ( A,B,C )

1. Geography :- Chapter 6 ques-ans.2. History :- Chapter 7 ques – ans.3. Civics :- Chapter 6 ques-ans.4. Map of India :- State capitals.

K V No. 1 BATHINDA CANTT

Holiday Homework (Autumn Break)

Page 7: €¦  · Web viewK V No. 1 BATHINDA CANTT. The holiday homework for the autumn break for classes 6. th. to 12. th ( all sections) is as follows. HOLIDAY HOMEWORK FOR CLASS XII ARTS

CLASS :- XI ARTS

SUBJECT :- Geography

1. World Map :- The continent , ocean and sea of the world, locate and label all these in outline map.

2. Five map of India.3. Major rivers of India.4. Soil of India5. Write and Explain about the major soil and natural vegetation.

CLASS :- XII ARTS

SUBJECT :- Geography

1. Solve previous year question papers of geography ( last two years with mid term question paper. )

2. Complete your pratical work of chapter no. 4 & 5 from practical book.

K V No. 1 BATHINDA CANTT

Holiday Homework (Autumn Break)

Subject :- Economics

CLASS :- XII

1. Solve CBSE question paper of the year 2017-18.2. Solve CBSE question paper of the year 2016-17.

CLASS :- XI

1. Numerical Solution on Mean ( Class X based).2. Numerical Solution on Median ( Class X based).3. Numerical Solution on Mode ( Class X based).

K V No. 1 BATHINDA CANTT

Holiday Homework (Autumn Break)

Page 8: €¦  · Web viewK V No. 1 BATHINDA CANTT. The holiday homework for the autumn break for classes 6. th. to 12. th ( all sections) is as follows. HOLIDAY HOMEWORK FOR CLASS XII ARTS

Subject :- Math

CLASS :- 9th C

1. Solve complete Half Yearly paper.2. Solve and practice chapter 3,4,2.

K V No. 1 BATHINDA CANTT

Holiday Homework (Autumn Break)

Subject :- English

CLASS :- XI

1. Solve Half Yearly examination question paper.2. Solve Comprehension passages ( one passage per day ).3. Draft any five posters.4. Draft any five Notice.

CLASS :- XI

1. Solve Half yearly examination question paper.2. (a) Read at least two short reports in any English paper. Cut and paste

them on your notebook. On the basis of your reading of these reports, make notes on them in points only, using heading and subheading, use recognizable abbreviations where eve necessary.(b) Make a summary of these passages in not more than 80 words and

also suggest a suitable title.3. Solve Comprehension passages ( one passage per day ).4. Solve previous year board examination question papers (two papers) .

Solve them withi n 3 hrs and 15 mints.

ग्रीष्मकालीन अवकाशस्य गृहकाय�म्

कक्षा- षष्ठी

Page 9: €¦  · Web viewK V No. 1 BATHINDA CANTT. The holiday homework for the autumn break for classes 6. th. to 12. th ( all sections) is as follows. HOLIDAY HOMEWORK FOR CLASS XII ARTS

(1) बालकस्य शब्द रूपम् लिलखत |(2) “बालिलका” इतित शब्दरूपं लिलखत |(3) “पठ्” इतित धातु रूपम् लिलखत |(4) 20 लि%त्राणां संकलनं करणीयम् तथा तेषां संस्कृत पदातिन लिलखत |(5) पञ्% वण� सम्मेलनं तथा पञ्% वण�तिवचे्छदम् कुरुत |(6) प्रथमति1तितयोः पाठयोः स्मरणं करणीयं |

कक्षा – सप्तमी (1) एतत् ( पु॰,स्त्री॰) शब्दरूपम् लिलखत |(2) तिकम् ( पु॰,स्त्री॰) शब्दरूपम् लिलखत |(3) “नदी,तिपतृ” इतित शब्दरूपौ लिलखत |(4) “%र्,कृ “ इतित धातुरूपौ लिलखत |(5) (1-50) इतित धातुरूपौ लिलखत |(6) पठिठतानां पाठानाम् अभ्यासकाय�स्य स्मरणं करणीयं |

कक्षा –अष्टमी(1) “अस्मद ्,युष्मद”् इतित शब्दरूपौ लिलखत |(2) “माता ,राजन्” इतित शब्दरूपौ लिलखत |(3) “खाद,्इष्” इतित धातुरूपौ लिलखत |(4) (51-100) इतित धातुरूपौ लिलखत | (5) पाठ्यपुस्तकातितरिरकं्त 20 श्लोकाः लिलखत |(6) पठिठतानां पाठानाम् अभ्यासकाय�स्य स्मरणं करणीयं |

इति� समाप्�ं

शर� अवकाश काय"कक्षा :- 12 हिह%�ी ( परिरयोजना काय" )

Page 10: €¦  · Web viewK V No. 1 BATHINDA CANTT. The holiday homework for the autumn break for classes 6. th. to 12. th ( all sections) is as follows. HOLIDAY HOMEWORK FOR CLASS XII ARTS

शर� अवकाश काय"कक्षा :- 11 हिह%�ी ( परिरयोजना काय" )

1. तिकसी एक घटना की तिवश्ह� रिरपोट" �े�न I

Page 11: €¦  · Web viewK V No. 1 BATHINDA CANTT. The holiday homework for the autumn break for classes 6. th. to 12. th ( all sections) is as follows. HOLIDAY HOMEWORK FOR CLASS XII ARTS

2. तिकसी काय"क्रम की वर्ण"न सतिह� रिरपोट" �े�न I3. तिकसी एक तिव$य पर फीचर व एक आ�े� समाचार पत्र से क�रन के बा�

परिरयोजना फाइ� में चस्पा करना I

HOLIDAY HOME WORK

CLASS -10

SUBJECT - ENGLISH

*STORY WRITING

a) The parent teacher meeting was schedule for tomorrow ------- scared of informing them that he had missed the school often------no way out------crooked a story.

b) He opened the factory door --------- peeped inside-------- some light ----------last shift over---------could be thieves-----------.

*LETTER WRITING

c) Write a letter to the editor of a national daily

expressing you opinion and views on the increased human dependence on technology right from a small child to and adult or even an old man, everyone wants gadget only---------cellphone, Ipad -------- laptop etc. This also has a negative effect on social relationship. Write the letter in 100-120 words.

d) Write a letter to the sales manager of a publishing, placing an order for the books (minimum 4 titles) for your school library. Invent the necessary details.

e) Your locality is a decade old but drinking water supply and sewage connection have not been provided in your locality. Write a letter to the Executive Engineer, Punjab Water and Drainage Board about the problems faced by residents seeking immediate actions.

*NOVEL

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Read chapters 14 to 23 and answer the questions given in the text.

*DRAMA

Write summary of the drama 'JULIUS CEASER'

Holiday Home work

Class – 7th Subject :- English

1. Paragraph: Importance of trees.2. Message: Write a message to inform your sister that her friend has called,

to know about homework, as she was absent.3. Ten new words with meaning and make sentences.4. Cut 2 newspaper clips and underline prepositions and paste it in your

copy.

Holiday Home work

Subject :- English Class – 6th

1. Write any 20 verb forms. (for example: Go Went Gone)2. Cut 2 newspaper clips and underline nouns and pronouns and paste it

in your copy.3. Read CH-6 who am I, for reading practice.

Holiday Home workSubject :- English Class – 8th

1. Diary Entry: How you have celebrated “Dussehra”2. Letter to Editor about nuisance created by loudspeakers in your locality.

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3. 10 pair of homographs with meaning ( for example Bat-an animal, Bat- Cricket)

4. 10 pair of homophones with meaning (e.g I,Eye)5. Ch-6 The flight for reading practice.

Holiday Home workSubject :- English Class – 9th

1. Letter to editor for use of unfair means by students in exams.2. Article writing on’ Importance of Positive thinking’3. Paste 5 newspaper headlines in your copy in passive voice, 5 in active

voice.4. Read Ch- Happy prince and write a story based on the moral of the

chapter.

Holiday Home workSubject :- Science Class – 10th C

1. Learn chapter 1,2,3,6,8,10,11,12,14,15 learn all equations, diagrams and activities.

2. Solve half yearly question paper.3. Read chapter :- Periodic Classification of elements.

Heredity & evolution.4. Learn all intext and exercise questions.

Note : All the above matter should be done in new note book.

Holiday Home workSubject :- Science Class – 9th C, A

1. Read chapters :- Sound , Natural Resources, Management of food resources.Write Q/Ans intext as well as exercise.

2. Draw diagrams of chapter :- sound, Natural Resources, Management of food resources in project file.

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3. Make Models :- Bell Jar experiment(sound), Reflection of sound, Any one cycle ( H2O, carbon, nitrogen, oxygen)

Holiday Home workSubject :- Science Class – 8th B

1. Solve Half Yearly Ques paper.2. Read and learn lesson :- 13,14,17,18.3. Make models of lesson :- 14,16,17.4. Diagrams of lesson :- 13,16,17 on project file.

Holiday Home workSubject :- Science Class – 7th A

1. Solve half yearly paper.2. Read and learn chapter :- 11,12,16,17.3. Project File :- Draw diagram :-

12.2,12.3,12.5,12.6,12.7,12.10,12.9,12.11,16.5,16.7.4. Models (a) Stethoscope :- 11.5

(b) Human excretory system (c) 15.32

5. Pictures ( paste in project file/scrapbook) :- 12.13,12.14,12.15

6. Collage of Posters :- 16.1 ( project file and notebook)

Holiday Home workSubject :- Social Science Class :- IX-A,X-A,6(A,B),8-C respectively

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Page 17: €¦  · Web viewK V No. 1 BATHINDA CANTT. The holiday homework for the autumn break for classes 6. th. to 12. th ( all sections) is as follows. HOLIDAY HOMEWORK FOR CLASS XII ARTS

Holiday Home workSubject :- Math Class – 6th A,B

1. Project :- Figures of Solid Shapes.2. Activites:- Learn and write tables from 5 to 20.3. Solve 80 text book questions from 2,3,6 and 7 chapter.

Holiday Home workSubject :- Math Class – 7th A,C

1. Project :- Model on congruent shapes.2. Prepare double bar graph.3. Activies:- write formula from each chapter

Write and learn by heart tables from 2 to 20. Solve 15 ques from each chapter (1 to 8). Solve half yearly ques paper.

Holiday Home workSubject :- Math Class – 8th C

1. Project:- Verification of angle sum and property of quadrilateral2. Solve 40 ques from 6 and 7 chapter.3. Solve half yearly ques paper.

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HOLIDAYS HOMEWORK

CLASS 6 C MATHS

ASSIGNMENTS

1. Write and learn tables from 2 to 20.

2. Write 100 dozing tables.

3. Solve each and every question of chapters 1, 2, 3 including examples.

ACTIVITIES

1. 10-10 M.C.Qs from chapter 1, 2, 3 and 5.

2. Find prime and composite numbers upto 1 to 30

PROJECTS

1. Construct Sieve of Eratosthene.

HOLIDAYS HOMEWORK

CLASS 7 B MATHS

ASSIGNMENTS

1. Write and learn tables from 2 to 20.

2. Write 100 dozing tables.

3. Solve each and every question of chapters 1, 2, 3 including examples.

ACTIVITIES

1. 10-10 M.C.Qs from chapter 1, 2, 3 and 5.

2. Question no. 1,4 on page 36,37

PROJECTS

1. Question no. 7 on page 48.2. Question no. 6 on page 55.

HOLIDAYS HOMEWORK

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CLASS 8 C MATHS

ASSIGNMENTS

1. Write and learn tables from 2 to 20.2. Write 100 dozing tables.3. Solve each and every question of chapters 1, 2,Exercise 3.1,3.2

including examples.

ACTIVITIES

1. 10-10 M.C.Qs from chapter 1, 2, and 3.

2. Represent rational numbers 2/5, 3/8,3/4,-2/3,-5/7 on number line.

PROJECTS

1. Show classification of polygons with the help of diagrams.

2. Write types of quadrilaterals and their properties using diagrams

HOLIDAYS HOMEWORK CLASS 9 A,B MATHSASSIGNMENTS

1. Write and learn tables from 2 to 20.2. Write 100 dozing tables.3. Solve each and every question of chapters 1, 2, 3 and 5 including

examples.

ACTIVITIES

1. 10-10 M.C.Qs from chapter 1, 2, 3 and 5.2. Represent √2, √3, √5,√10 and √3.5 geometrically.

PROJECT

1. Construction of square root spiral. 2. Visualize 4.262626…, 3.765765765…. on number line up to four decimal places.

Holiday Home work By Manju Lata

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SUBJECT :- SCIENCE CLASS :- X-B, XI-B, XII-B

HOLIDAYS HOME WORK BY SANTOSH KUMAR PGT PHYSICS

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For class 8th C science:

1. Write the definitions of all key words of next 5 chapters (after half yearly syllabus chapters)

2. Revise half yearly syllabus again. There will be mcq test after autumn break on half yearly syllabus.

HOLIDAYS HOME WORK BY SANTOSH KUMAR PGT PHYSICS

For class 11 th physics Solve a sample paper given below in class copy

SECTION A

Q1. Why does a satellite need no fuel to revolve around the earth? 1M

Q2. A light body and a heavy body have same momentum which one will have higher kinetic

energy? 1M

Q3. A tennis ball of mass ‘m’ strikes a massive wall with a velocity v and traces back the

same path. Calculate the change in momentum of the ball due to the wall.

1M

Q4. Which of the following measurements is more accurate and why?

1M

(a) 0.0002 g (b) 20.0 g

Q5. Under what condition will the distance and displacement of a moving object have the

same magnitude?

1M

SECTION B

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Q6. Draw the graph showing the variation of potential energy and kinetic energy of a block

attached to a spring with displacement of the block from the equilibrium position, which

obeys Hooke’s law.

2M

OR

Draw a graph showing the variation of potential energy and kinetic energy with respect to

height of a free fall of a body under gravitational force.

Q7. Two persons P and Q stand on 54m long moving belt. Person P rolls a coin towards Q at a

speed of 9 m/s w.r.t. the belt. Given belt rolls from P to Q at 4 m/s, find

a) Speed of coin w.r.t stationary observer.

b) Time taken by the coin to travel from P to Q.

2M

Q8. Derive the acceleration of a body when it moves over a circular path with constant speed.

2M

Q9. The velocity – time graph of an object moving along a straight line is as shown

Calculate distance covered by object between:

(i) t = 0 to t = 5 sec. (ii) t = 0 to t = 10 sec.

2M

Q10. Prove that the maximum horizontal range is four times the maximum height attained by

the projectile when fired at an inclination so as to have maximum horizontal range.

2M

Time (sec)

Velocity (m/sec) C

BA

0 2 5 10

20

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Q11. State parallelogram law of vector addition. Show that resultant of two vectors A⃗ and B⃗

inclined at an angle θ is given by R=√A2+B2+2 ABcosθ .

2M

Q12. State and prove work – energy theorem for variable force.

2M

SECTION C

Q13. Derive the relation v2 = u2 + 2as; using calculus method.

3M

Q14. A man of mass 70 kg stands on a weighing scale in a lift which is;

(a) Moving downwards with a uniform acceleration of 5 m/s2.

(b) Moving upwards with a uniform speed of 10 m/s.

(c) When the lift cable breaks and falls freely under gravity.

What would be the reading on the scale in each case? Take g=10m/s2

3M

Q15. A block of wood of mass 3 kg is resting on the surface of a rough inclined surface,

inclined at an angle θ as shown in the figure:

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(a) Name the forces (1, 2, 3).

(b) If the angle of inclination is 300, calculate the value of all the three forces.

(may use g = 10 m/s2)

3M

Q16. State parallel axis theorem for the calculation of moment of inertia using appropriate

diagram. Also calculate moment of inertia of a thin rod about one end parallel to centre of

mass axis, if I cm=

112ML2

.

3M

OR

State perpendicular axis theorem for calculation of moment of inertia using appropriate

diagram. Also calculate moment of inertia about a diameter if that of an axis

perpendicular to the plane of a disc and passing through its centre is given by12MR2

.

3M

Q17. Derive an expression for total energy of an orbiting satellite of mass m around the Earth

of massM E and radius RE at height h.

3M

Q18. A balloon rises from rest on the ground with constant acceleration g/8. A stone is dropped

when the balloon has risen to a height H metres. Show that the time taken by the stone

to reach the ground is given by 2√H /g . 3M

3

2

1

θ0

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Q19. Define coefficient of friction and angle of friction and hence derive a relation between

them.

Q20. Show that coefficient of restitution for one dimensional elastic collision is equal to one.

3M

Q21. Derive an expression for kinetic energy of rotation of a rigid body.

3M

Q22. A body of mass 1 kg, initially at rest, explodes and breaks into three fragments having masses in the ratio 1: 1: 3. The two pieces of equal masses fly off perpendicular to each other with a speed of 30 m s -1 each. What is the velocity of the heavier fragment? 3M

Q23. It is easier to pull a lawn roller than to push it. Justify the statement.

3M

Q24 Derive an expression for angle which a cyclist should make with the vertical to take a

safe circular turn?

3M

SECTION D

Q25. (a) Derive coordinates of centre of mass of two particle system? 3M

(b) Four bodies of masses m1 = 1kg, m2 = 2kg, m3 = 3kg and m4 = 4kg, located at the

corners of a rectangles as shown in Fig.

Calculate the centre of mass of given system. 2M

m2m1

m3

oa

b

Y

m4

x

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OR

(a) Imagine earth shrinks suddenly. Will it affect the length of the day? If so how?

Explain. 2M

(b) A wheel of radius 1 m starts from rest and has angular acceleration of 3 rad s-2. Find

angular displacement and angular velocity of the wheel after 4 s. What is the

centripetal acceleration at a point on its rim at that instant? 3M

Q26. a) What is escape velocity? 1M

b) Obtain the expression for the escape velocity on earth. 3M

c) Explain why there is no atmosphere on the moon? 1M

OR

a) What do you understand by gravitational potential energy of a body? 1M

b) Derive an expression for it, when a body of mass ‘m’ is situated at a distance ‘r’ from

the centre of earth of mass M. 4M 5M

Q27. (a) Show that angular momentum has the same physical units as those of Planck’s

constant. 1M

(b) A body travels uniformly a distance of (13.8 0.2) m in a time (4.0 0.3) s. What is

the percentage error in velocity? 2M

(c) If the depth d to which a bullet of kinetic energy K can penetrate into a human body of

elasticity E, using the method of dimensions, establish a relation between d, K and E.

2M

OR

a) Given the value of G in cgs systems as 6.67 10-8 dyne cm2 / g2, find the value in mks

system in Nm2 / kg2. 2M

b) A jet of water of cross-section area a impinges normally on a stationary flat plate with a

velocity υ. If is the density of water, determine by dimensional analysis the expression

for the force, F exerted by the jet on the plate. 3M

5M

******* END OF PAPER *******

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HOLIDAYS HOME WORK BY SANTOSH KUMAR PGT PHYSICS

For class XII physics (HW)

1. Solve previous years 5 sample papers questions from ch 1 to 10 based.