HOLIDAY HOMEWORK – XI

ENGLISH

1. You are David/Dorothy, the secretary of the Dance and Drama Society of the Sanskrit School, Patna. Write a notice for your school notice board inviting students to give their names fro a Fancy Dress Competition. 2. Mother Teressa Public School, Kolkata is organizing a debate on 15 Jul, 2016 at 11 a.m. The topic is ‘Environmental degradation is a global concern’. Two students can participate from each school. As social secretary of your school put up a notice inviting names of students who wish to participate in the debate. 3. Write a notice to be circulated among the students of class XII informing them about a free trip to the International Trade Fair at Pragati Maidan. Imagine you are Priya / Pranav, School Captain. 4. Manisha feels that the progress of the nation is linked to women empowerment. She decides to write an article for a newspaper on ‘Women Empowerment’. Write an article giving her views and suggestion. (150 words) 5. You felt impressed by the activities held during the ‘Clean Your City Campaign’. As a lover of cleanliness. Write a speech to be read out in the morning assembly urging students to participate in the campaign. (150 words). 6. Write a speech in about 150 words to be delivered at the morning assembly highlighting the ‘Need and Value of Outdoor Games’. 7. Write a letter to the Managing Director New Woodlands Hotel, Chennai to find out the rates for conducting the XII standard Farewell Party on their lawns, enquiring about catering costs per head, service charges and advance to be paid. 8. You are Jatin Dass of 7, Court Road Cuttack. You bought a Bajaj Ceiling fan from M/S Pawan Hans Electricals, Temple Road, Cuttack, an authorized dealer. It had a seven year guarantee, but you discovered after a week that the fan was not working properly. Write a letter to the dealer asking him to replace the defective fan. 9. You are Akshita / Akshay staying at 15, Agra Road, Kanpur. Write a letter to the Editor of newspaper highlighting the necessity of having better facilities for pedestrians by improving the condition of the footpaths in your city. You may use the following notes

• Narrow footpaths

• Pedestrians prone to accidents • Unauthorised hawkers on pavements

• Pools of stagnant water 10. Read the novel and learn all the character sketches.

PHYSICS ASSIGNMENT - 1

1. A planet moves around the Sun in nearly circular orbit. It’s period of revolution T depends upon (i) radius r (ii() mass M of the Sun (iii) Universal Gravitational

Constant. Show dimensionally that 2 3T r∝

2. Derive by the method of dimensions, an expressions for the volume of a liquid flowing out per second through a narrow pipe. Assume that rate of flow of liquid depends on (i) the coefficient of viscosity η of the liquid (ii) the radius of pipe r

and (iii) the pressure gradient (P/l) along the pipe. Take 8

πκ =

3. Find the value of 60 J per min on a system that has 100 g, 100 cm and 1 min as the base units.

4. ( )2

aP v b RT

v + − =

, where P and V are Pressure and Volume respectively. Find the

dimension of a & b.

5. The % error in measuring of mass and space are 2% and 3% respectively. How much will the maximum error in the estimate of (i) Kinetic Energy and (ii) Momentum

6. Find the percentage error in heat produced when current flowing in the wire. The percentage errors in current resistance and time are 1%, 2% and 1% respectively. Heat

produce according to the formula 2H I Rt=

ASSIGNMENT – 2

1. Name the four fundamental /basic forces in nature. Arrange them in the order of their increasing strengths. 2. Give the full form of LASER and RADAR. 3. Distinguish between the terms Precision and Accuracy of a measurement. If slap times speed equal power, what will be the dimensional equation for slap 5. What are the dimensions of a and b in the relation F = a + bx where F is Force and x is distance? 6. Can a quantity have dimensions but still has no unit? 7. Can a quantity have unit, but still be dimensionless? 8. Can there be a Physical Quantity that has no units and no dimension? 9. Deduce the relations between astronomical unit, light year and parsec. Arrange them in decreasing order of their magnitudes.

10. Write the full name of the technique used in locating (a) an under water obstacle (b) position of an aeroplane in space. 11. If the unit of force is 100 N, unit of length is 10m and unit of time is 100s. What is the unit of mass in this system of units. 12. The displacement of a progressive wave is represented by sin( )Y A t kxω= − , where

x is distance and t is time. Write the dimensional formula of (i) ω (ii) k13. Check the correctness of the equations

(i) 2 3

2 4π rT =

GM r → radius, G → Gravitational Constant, M → Mass

(ii) 4Pr

8V

l

πη

= P → Pressure, l → Length, η → Coefficient of Viscosity

V → Volume of liquid flowing out per second. 14. Taking velocity, time and force as the fundamental quantities, find the dimensions of mass. 15. If density σ , acceleration due to gravity g and frequency are the basic quantities, find the dimensions of force. 16. The velocity v of water waves depends on the wavelength λ , density of water σ and the acceleration due to gravity g. Deduce by method of dimensions the relationship between these quantities. 17. If the errors involved in the measurement of a side and mass of a cube are 3 % and 4% respectively. What is the maximum permissible error in the density of the material. 18. The length and breadth of a rectangle are (57 ± 0.1) cm and (3.4 ± 0.2) cm. Calculate area of the rectangle with error limits. 19. A gas bubble from an explosion under water, oscillates with a period T proportional

to a b cP d E , where P is static pressure, d is the density of water and E is the total energy of the explosion. Find the value of a, b and c.

20. Find the dimension of a and b in the equation 2

( )a

P V bV

+ −

= RT

Where P → Pressure , V →Volume 21. The number of particles crossing a unit area perpendicular to x – axis in unit time is given by:

2 1

2 1

n nD

x xη −= −

−, where 1n and 2n are number of particles per unit volume for the

value of X meant to be 1x and 2x . Find the dimensions of the diffusion constant D.

22. What is meant by parallax and parallactic angle? Explain how this method is used for the determination of the distance of a planet. 23. Describe a method for measuring the molecular size of oleic acid.

CHEMISTRY

1. Make an investigatory project on environmental chemistry.

2. Do the following NCERT questions in your fair note books

Lesson 2

Q. 2.1, 2.2, 2.10, 2.11, 2.12, 2.18, 2.18, 2.19, 2.27, 2.28, 2.31, 2.34, 2.35, 2.36, 2.37,

2.38, 2.39, 2.43, 2.44, 2.47, 2.49, 2.50, 2.51, 2.53, 2.54, 2.55, 2.56, 2.57, 2.58, 2.59,

2.60, 2.61, 2.64, 2.67

3. Draw long form of periodic table in fair note book and learn it.

MATHEMATICS

1. COMPLEX NUMBERS:

Exercise 5.1 Q.6, Q.7, Q.9, Q.11, Q.14

Exercise 5.2 Q.3, Q.4, Q.8, Examples

Exercise 5.3 Q.7, Q.8, Q.9, Q.10

Miscellaneous Exercise Q.2, Q.4, Q.5, Q.10, Q.14, Q.16, Q.17, Q.18

2. LINEAR INEQUALITIES

Exercise 6.1 Q.3, Q.7, Q.11, Q.16, Q.22, Q.23, Q.26

Exercise 6.2 Q.5, Q.8, Q.9

Exercise 6.3 Q.5, Q.9, Q.11, Q.12, Q.14, Q.15

Miscellaneous Exercise Q.6, Q.8, Q. 11, Q.12

3. PRINCIPLE OF MATHEMATICAL INDUCTION:

Exercise 4.1 Q.2, Q.3, Q.6, Q.8, Q.10, Q.14, Q.16, Q.19, Q.22, Q.24

BIOLOGY

1. Prepare a bank of well-labelled diagram of Unit III- Cell-Structure and Function

2. Try and make a visit to pathology lab and prepare a brief report on principle and functioning of different instruments kept there.

3. Complete the investigatory project allotted.

4. Complete NCERT Question and Answers of the Chapter – Cell, Cell Cycle and Biomolecules.

ACCOUNTANCY

1. Differentiate between recording and classification of financial transactions in accounting.

2. Explain the steps in accounting process in brief.

3. Distinguish between book-keeping and accounting.

4 (a). Explain briefly the objectives of accounting.

(b) Explain briefly the limitation of accounting.

5. What is meant by business transaction? Name its types.

6. Distinguish between internal liability and external liability.

7. What are assets? Name its types.

8. Distinguish between tangible and intangible assets.

9. Differentiate between capital receipts and revenue receipts.

10. Explain the term- (i) Purchases (ii) Sales

11. Distinguish between debtors and creditors.

12. Distinguish between bills receivable and bills payable.

13(a). Distinguish between Revenue Expenditure and Deferred Revenue Expenditure.

(b) Revenue Expenditure and Capital Expenditure

14. What is a stock? What is included in the stock of a manufacturing concern?

15. What is a voucher?

16. Name the internal and external uses of accounting information and explain very briefly why accounting information is important for each of them.

BUSINESS STUDIES

1. Write two example of each of the following:

a) Economics Activity b) Non Economic Activity

c) Genetic Industry d) Extractive Industry

e) Secondary Industry f) Tertiary Industry

g) Auxalaries to Trade h) Price Risk

i) Speculative Risk j) Natural Cause of Risk

k) Human Cause of Risk l) Economic Cause of Risk

m) Other Risk n) Profession

2. Choose a locally operated trading or Business unit find put the kind of risk it faces in the Business and way it deals with them.

3. Select a local Business Enterprise and find out the objectives it pursues. Check and write why it does not pursue other objectives.

ECONOMICS

1. Develop Project (About 10 Pages)

• Design – Eco friendly Project – Example Paper and Water Recycle • Global Warming

2. Collect and compile data related to (2015 – 16)

• India’s National Income • G.D.P

• Per Capita Income • Human Development Index Ranking • Percentage of population living below poverty line.

HOME SCIENCE

1. Prepare a games for the children to aware about nutrition and good food habits.

2. Prepare paper samples of basket weave, satin meave and sateen weave.

3. To paint and decorate an earthen pot.

PHYSICAL EDUCATION

Work should be done in Lab Mannual.

1. Write any one Game of your choice.

a) Badminton b) Judo c) Swimming

d) Table Tennis f) Taekwondo and Lawn Tennis

� Write it about a) History of the Game b) Draw a neat diagram of the field/court c) Rules and Regulation d) Fundamental Skills of the Game e) Terminology of the Game f) Sports Personalities of Game g) Important Tournament of the Game

� Write Arjuna Award � History of the Award � Rules and Regulation � Eligibility � Nomination

2. Learn Chapter – 1 Changing Trends in Physical Education.

PAINTING

THEORY

Learn the Chapter ‘An Introduction to Art’ – Limbs of Art, Elements of Art, Principles of Art, Vanishing Point, Definition of Colour, Effect of Colour.

‘Pre-historical Rock Painting’- a roaring animal, Wizard’s dance

SKETCHING

� Landscape � Pencil – Shading � A Scene of Village