ARMY PUBLIC SCHOOL PATIALA (2020-2021)

HOLIDAYS HOME WORK ASSIGNMENT

CLASS: IX

SUBJECT: MATHEMATICS

DO THE FOLLOWING QUESTIONS IN SEPARATE NOTEBOOK.

1. Express the following as fraction:

a) 15.712̅̅̅̅

b) 23.43̅̅̅̅

2. Simplify: 3 √2−2 √3

3 √2+2 √3 +

√12

√3− √2

3. Find the value of a if, 6

3 √2−2 √3 = 3 √2 − 𝑎 √3

4. Simplify:

a) (125)2/3 ÷ (125)4/3 × (125)1/3

b) 1

3 × (√5)6 × (36)3/2

5. Locate √6 and √10 on a number line

6. Simplify (13 + 23 + 33 )1/2

7. If a = 3+√5

2 , then find the value of (a +

1

𝑎)2

8. If x= 7+ 4√3, then whether x2 – ( 1

𝑥)2 is rational or irrational?

9. A taxi driver takes some fixed charge and some amount for every KM travelled. Take

x as fixed charge and y as fare per KM. Write the expression in linear form, if a person

who has travelled 25 KM has to pay Rs. 100. Draw its graph also.

10. Factorise :

a) x 3 – 10x2 – 53x - 42

b) 2y3 – 5y2 – 19y + 42

11. Factorise:

a) 4x2 + 25y2 + 9z2 – 20xy – 30yz + 12zx

b) 9x2 + 24xy + 16y2

12. Find value of m if (2x-1) is factor of 8x4 + 4x3 -16x2 +10x + m

13. Give the geometric representations of x + 3.5 = 0.

i) In one variable ii) In two variables.

14. Plot A (5, 3), B (-2, 3) and D (5,-4). Join them to form a square ABCD and find co-

ordinates of C.

15. Plot the points A (-1, 2), B (3, 2), C (-1,-1) and D (3,-1). Identify the figure and find its

perimeter.

Holiday Homework (Session:2020-21)

Class – IX Subject – English

NOTE : THE HOLIDAY HOMEWORK CAN BE DONE IN THE NOTEBOOK, FILE, WORD FILE OR

PPT.

1. Read the play ‘If I Were You’ [Book – Beehive, Chapter – 11] and write down the

answers of the following questions :-

a. The play ‘If I Were you’ has an element of suspense, surprise and humour. Quote

some instances from the play to validate this statement.

b. Do you think the title ‘If I Were you’ is suitable for the play? Give reasons in

support of your view.

2. Happiness is the ultimate goal of all human beings. We keep on chasing it throughout

our life.

Write an article in about 100-150 words on the topic “Our happiness in life depends

entirely on our mental attitude”.

3. Design an attractive table calendar depicting the works and contribution of any

famous English playwright/ Poet/ writer.

a. Include the details (birth, death, education, style of writing, famous work) of the

poet playwright/ Poet/ writer.

b. End with the famous quote, lines, dialogue, poem of the selected playwright/

Poet/ writer.

4. Project

Conduct an Interview with your parents and find out how things have changed over

time. Your project must include minimum of 10 questions (Record the interview in

Audio format). Some ideas, topics you could include in the questionnaire are :

a. What they thought was a really fun thing to do when they were children?

b. The music they listened to?

c. The movies they liked?

d. And the television shows they enjoyed?

e. Why they liked these things then?

f. When my parents were my age. What were they not allowed to do?

g. What did their parents believe in?

h. What did they disagree with their parents about?

i. How much money did they have for themselves as their pocket money?

j. What was the maximum amount they were allowed to spend on?

k. In what ways are your parents like their parents?

l. In what ways are they different?

m. Who were the people they admired when they were teenagers?

SUBJECT-SOCIAL SCIENCE

HOLIDAYS H.W (2020-2021)

HISTORY

Is France affected by the outbreak of COVID 19? Read some news items to

find out the measures taken by France to combat the pandemic.

Revise Ch-1 ( THE FRENCH REVOLUTION)

Civics

Write a note on the important leaders who were the makers of the

Constitution of India

Wite a note on the Political representation of women in the Panchayats,

Municipalities and the Parliament.

Revise Ch- 2 WHAT IS DEMOCRACY ? WHY DEMOCRACY?

Ch-3 CONSTITUTIONAL DESIGN

CH-4 ELECTROL POLITICS

Geography

Revise ch-1 (INDIA SIZE AND LOCATION)

CH-2(PHYSICAL FEATURES OF INDIA)

CH-3(DRAINAGE) till Himalayan rivers

ECONOMICS

Collect the details of different factors of production like, labour, physical

capital and human capital from various sources such as books, magazines,

newspapers ,internet and elders.

Revise Ch-1 (THE STORY OF VILLAGE PALAMPUR)

Ch- 2 (PEOPLE AS RESOURCE)

Note- Complete your Social Science C.W, H.W notebooks and map work

related to geography.

Do your holidays homework in homework notebooks

Army Public School, Patiala

Holidays Homework

Class: 9th Subject: Science

Section-A: Physics

Assignment

MCQ

1. For the given v-t graph, it can be inferred that the object is:

a) At rest

b) In uniform motion

c) Moving with uniform acceleration

d) Non-uniform motion

2. Suppose a boy is enjoying a ride on merry-go-round which is moving with a constant

speed of 10 m/s. It implies that the boy is:

a) At rest

b) Moving with no acceleration

c) In accelerated motion

d) Moving with uniform velocity

3. A particle is moving in circular path of radius ‘r’.

The displacement after the half circle will be:

a) Zero

b) 𝜋𝑟 c) 2r

d) 2𝜋𝑟

4. When a car driver travelling at a speed of 10 m/s applies brakes and brings the car to rest

in 20 seconds, then the retardation will be:

a) +2 m/s2

b) -2 m/s2

c) -0.5 m/s2

d) +0.5 m/s2

5. The numerical ratio of displacement to distance for a moving object is:

a) Always less than 1

b) Equal to 1 or less than 1

c) Always more than 1

d) Equal to or more than 1

6. Four cars A, B, C and D are moving in a leveled, straight road. Their distance time graphs

are shown in the figure below. Which of the following is the correct statement regarding

the motion of these cars?

a) Car A is faster than Car D

b) Car B is the slowest

c) Car D is faster than Car C

d) Car C is the slowest

3 Marks questions

1. The displacement of a moving object in a given interval of time is zero. Would the

distance travelled by the object also be zero? Justify.

2. How will the equations of motion for an object moving with uniform velocity change?

3. A girl walks along a straight path to drop a letter in a letterbox and comes back to her

initial position. Her displacement-time graph is shown in Fig 8.4. Plot the velocity time

graph for the same.

4. A car starts from rest and moves along the x-axis with constant acceleration 5 m/s2 for 8

seconds. If it continues with constant velocity, how much distance will the car cover in 12

seconds since it started from rest?

5. A motorcyclist drives from A to B with uniform speed 30 km/hr and returns back with a

speed of 20 km/hr. Find its average speed.

6. The velocity time graph (Fig. 8.5) shows the motion of a cyclist. Find (i) its acceleration,

(ii) its velocity and (iii) the distance covered by cyclist in 15 seconds.

7. Draw a velocity versus time graph of a stone thrown vertically upwards and then coming

downwards after attaining the maximum height.

5 Marks Questions

1. A car moves with a speed of 30 km/hr for half an hour, 25 km/hr for one hour and 40

km/hr for two hours. Calculate the average speed of the car.

2. Derive the equation for the velocity-time relation (𝑣 = 𝑢 + 𝑎𝑡) by graphical method. A

car is travelling at 20 km/hr, it speeds upto 60 km/hr in 6 seconds. What the acceleration?

3. A car accelerates from 6 m/s to 16 m/s in 10 seconds. Calculate:

a) The acceleration and,

b) The distance covered by the car in that time.

4. A circular track has a circumference of 3140 m with AB as one of the diameter. A

scooterist moves from A to B along the circular path with a uniform speed of 10 m/s.

Find,

a) Distance covered by the scooterist,

b) Displacement of the scooterist, and

c) Time taken by the scooterist in reaching from A to B.

5. Answer,

a) Differentiate between uniform and non-uniform circular motion.

b) Write any four examples of uniform circular motion.

c) Is uniform circular motion accelerated motion.

6. Answer,

a) Differentiate between speed and velocity.

b) When is the body said to have uniform velocity?

c) How can we describe the position of an object?

Illustrate with suitable examples.

7. The graph given alongside shows how the speed of car changes with time.

a) What is the initial speed of the car?

b) What is the maximum speed attained by the car?

c) Which part of the graphs shows zero acceleration?

d) Which part of the graph shows varying retardation?

e) Find the distance travelled in first eight hours?

8. Study the velocity time graph and calculate.

a) The acceleration from A to B

b) The acceleration from B to C

c) The distance covered in region ABE

d) The average velocity from C to D

e) The distance covered in region BCFE

9. The following table gives the data about the motion of the car.

Plot the graph.

a) Find the speed of car between 12:00 hours and 12:30 hours.

b) What is the average speed of the car?

c) Is the Car’s motion an example of uniform motion? Justify.

10. Answer,

a) Derive the equation of motion 𝑣 = 𝑢 + 𝑎𝑡 using graphical method.

b) A train starting from rest attains velocity of 72 km/hr in 5 minutes. Assuming the

acceleration is uniform, find

(i) The acceleration.

(ii) The distance travelled by train to attain the velocity.

Also complete NCERT exercise of the Chapter Motion.

Section-B: Chemistry

1) Complete notes of Lesson-1.

2) Complete NCERT exercises of Lesson-1.

3) Complete Question Bank 1&2 of Lesson-1.

4) Learn important topics of Lesson-1.

Section-C: Biology

Question Bank

1. Which organelle is not found in animal cell?

2. Why does osmosis cause an animal cell to burst when it is placed in an freshwater

environment?

3. Which cell organelle plays the role of generating protein?

4. What are the different types of tissues present in plants?

5. What is the function of stomata?

6. What is responsible for increase in girth of stem or the root?

7. What is lignin?

8. Differentiate between collenchyma and sclerenchyma.

9. Why xylem and phloem are called complex tissues?

10. Describe structure and function of nucleus.

Complete notes and NCERT exercises of Chapter-5.

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