MCQ PRACTICE

Welcome to your Ncert – class 9- science – Chapter 7 – Motion 2

Which of the is true for displacement?

A It cannot be Zero

B Its magnitude is greater than the distance travelled by the object

C It’s the shortest distance between initial & final position

D It is a vector quantity

(b) and (c) are correct

(a) and (b) are correct

(a), (b) and (c) are correct

All of these

None

A reference point which is used for observing the motion is called

horizon

final point

origin

initial point

None

A train 120m long moving on a straight and level track with uniform speed passes a pole in 6 seconds. Find the time it will take to cross a 50m long bridge.

9 second

8 second

8.5 second

9.5 second.

None

Instantaneous speed of a vehicle is measured by

both a and b

speedometer

none of these.

odometer

None

A particle covers equal distance in equal interval of time. It is said to be

at rest

none of these

moving with constant acceleration

moving with constant speed (ans)

None

When you travel 40 km towards East and then 10 km towards West, your net displacement is

50 km towards West

50 km towards East

30 km towards East

30 km towards West

None

Statement A: A curved line in a speed – time graph means non-uniform motion.

Statement B : A curved line in a velocity – time graph means uniform acceleration

statement B is false, A is true

statement A is true, B is false

neither statement A nor Statement B is true.

Both the statement A and B are true

None

Match the following with correct response.

(1) Speed

(2) Velocity

(3) Acceleration

(4) Average speed

(A) Displacement / Time taken

(B) Total distance covered / Total time taken

(D) Distance covered / Time taken

1-C, 2-B, 3-D, 4-A

1-B, 2-D, 3-A, 4-C

1-A, 2-C, 3-B, 4-D

1-D, 2-A, 3-C, 4-B

None

Which of the following is a vector quantity?

A Retardation

B Speed

C Force

D Distance

All of these

(a), (b) and (c) are correct

(a) and (c) are correct

(b) and (c) are correct

None

10.

Which of the following is an example of uniform motion?

A The motion of car in the busy road

B The motion of a satellite around the planet

C The motion of moon around the earth

D The motion of any particle on the arm of a clock

(b) and (c) are correct

(a) and (b) are correct

(b), (c) and (d) are correct

All of these

None

11.

The ______ of a distance versus time graph is speed.

origin

none of the above

slope

y-intercept

None

12.

Name the instrument used to measure instantaneous speed of a vehicle.

Ammeter

Multimeter

Speedometer

Accelerator

None

13.

Statement A: When a body moves with uniform speed, then the average speed is same as instantaneous speed.

Statement B: Average speed is less than average velocity.

Which of the above statement is true

neither statement A nor B.

Statement A

both a and b

Statement B

None

14.

Statement A: When a body moves with uniform speed, then the average speed is same as instantaneous speed.

Statement B: Average speed is less than average velocity.

Which of the above statement is true

neither statement A nor B.

Statement A

Statement B

both a and b

None

15.

If the speed-time graph is a straight line parallel to the time axis, then the body is in

uniform motion

non-uniform accelerated motion

at rest

accelerated motion

None

Chapter 7 - Motion

Chapter 8-Force and Law of Motion

Chapter 9 - Gravitational

Chapter 10 - Work and Energy

CHAPTER 11 - SOUND

Curriculum

NCERT - Class 9 - Science - PHYSICS

Chapter 7 - Motion

Chapter 8-Force and Law of Motion

Chapter 9 - Gravitational

Chapter 10 - Work and Energy

CHAPTER 11 - SOUND

MCQ PRACTICE – 2