ECAT Pre General Science Physics Chapter 4 MCQ Test With Answer

MCQ's Test For ECAT Pre General Science Physics Chapter 4 Work and Energy

Try The MCQ's Test For ECAT Pre General Science Physics Chapter 4 Work and Energy

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ECAT Pre General Science Physics Chapter 4 Work and Energy

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Question # 1

The field in which work done is moving body between two points depends upon the path followed is called:

Question # 2

Energy stored in the spring of a watch is called

Question # 3

Work done is maximum when angle between force and displacement is

Question # 4

Work is a scalar product of

Question # 5

The work performed on an object does not depend on

Question # 6

The work done on the body will be zero if:

Question # 7

A two Kg block is held 1 m above the floor for 50 seconds, the work done is:

Question # 8

A body moves a distance of 10 m along a straight line under the action of a force of 5 N and work done in 25J. The angle which the force makes with the direction of motion will be

Question # 9

Work is a:

Question # 10

Work done in lower and bucket into the well is:

Question # 11

Work done is maximum when angle between force and displacement is:

Question # 12

Tick the conservative force

Question # 13

When a force of 0.5 N displaces a body through a distance of 2m in the direction of force, the work done is

Question # 14

Power is a :

Question # 15

Maximum work is done when force and displacement are

Question # 16

Tick the conservation force:

Question # 17

When a falling body hits ground, its KE changes to _____ energy.

Question # 18

The Space around the Earth within which it exerts a force of attraction on other bodies is known as

Question # 19

The space around the earth within which it expects a force of attraction on other bodies is known as:

Question # 20

A solar cell is made from:

Question # 21

If we draw a graph between d (along x-axis) and F (along y-axis) and get a straight line horizontal to x-axis, then area under this straight line represents:

Question # 22

A body moves a distance of 10 m along a straight line under the action of a force of 5 N. If the work done is 25 J, the angle which force makes with the direction of motion of a body is:

Question # 23

The energy stored int he water of the dam is:

Question # 24

The unit of work in CGS system is

Question # 25

Work has the dimensions as that of

Question # 26

The value of escape velocity of Earth planet comes out to be:

Question # 27

The work performed on an object does not depend on:

Question # 28

A boy pulls a toy car through a distance of 5 m by applying a force of 0.5 N, Which makes an angle of 60° with the horizontal. The work done by the boy is:

Question # 29

Work done on a body by gravity in lifting it up to certain height is

Question # 30

Work is a always done on a body when

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Sr. # Question Answer
1 The space around the earth within which it expects a force of attraction on other bodies is known as:

A. Nuclear field

B. Conservative field

C.Electric field

D. Gravitational field

2 The space around the earth in which its gravitational force acts on a body is called

A. Electric Field

B. Gravitational field

C.Magnetic field

D. Conservative field

3 The work done on the body will be zero if:

A. No force is applied on the body

B. Force is applied but no displacement

C.Angle between F(force) and d(displacement) is 90°

D. All of these are correct

4 A field in which the work done is moving a body along closed path is zero is called:

A. Nuclear filed

B. Conservative field

C.Gravitational field

D. Non-conservative field

5 The energy stored int he water of the dam is:

A. Electric energy

B. Kinetic energy

C.Potential energy

D. None of these

6 A body moves a distance of 10 m along a straight line under the action of a force of 5 N and work done in 25J. The angle which the force makes with the direction of motion will be

A. 60°

B. 90°

C.30°

D. 0°

7 When a force of 0.5 N displaces a body through a distance of 2m in the direction of force, the work done is:

A. 2 J

B. 0.25 J

C.1 J

D. 0.5 J

8 A body moves a distance of 10 m along a straight line under the action of a force of 5 N and work done is 25J. The angle which the force makes the direction of motion will be:

A. 60°

B. 90°

C.30°

D. 0°

9 A boy pulls a toy car through a distance of 5 m by applying a force of 0.5 N, which makes and angle of 60° with the horizontal. The work done by the boy is:

A. 1.25 J

B. 12.5 J

C.125 J

D. None of these

10 Most of the geysers occur in:

A. Volcanic regions

B. Magnetic regions

C.Northern region

D. None of these

11 The tidal energy is produced due to rotation of Earth relative to:

A. Moon

B. Sun

C.Oceans

D. Water

12 A solar cell converts energy of the Sun into:

A. Heat energy

B. Magnetic energy

C.Light energy

D. Sound energy

13 A field in which the work done in moving a body along closed path is zero is called

A. Nuclear Field

B. Conservative field

C.Gravitational field

D. Non-conservative field

14 When velocity of moving body is doubled, the quantity which is also doubled is its:

A. K.E.

B. Acceleration

C.Momentum

D. P.E.

15 Tick the conservative force

A. Tension in a string

B. Air resistance

C.Elastic spring

D. Frictional force

16 If we draw a graph between d(along x-axis) and F (along y-axis) and get a straight line horizontal to x-axis then area under this straight line represents:

A. Power

B. Work

C.Pressure

D. None of these

17 Energy stored in the spring of a watch is called

A. Potential energy

B. Kinetic energy

C.Nuclear energy

D. Elastic potential

18 Work done is lowering the bucket into the well is:

A. Zero

B. Positive

C.Negative

D. None of these

19 A boy pulls a toy car through a distance of 5 m by applying a force of 0.5 N, Which makes an angle of 60° with the horizontal. The work done by the boy is:

A. 1.25 J

B. 12.5 J

C.125 J

D. None of these

20 When a falling body hits ground, its KE changes to _____ energy.

A. Potential

B. Chemical

C.Mechanical

D. sound and heat

21 If we draw a graph between d (along x-axis) and F (along y-axis) and get a straight line horizontal to x-axis, then area under this straight line represents:

A. Power

B. Work

C.Pressure

D. None of these

22 The work done in moving a body between two points in a conservative field is independent of the

A. Direction

B. Force applied

C.Path followed by the body

D. Power

23 When a body moves against the force of friction on a horizontal plane, the work done by the body is:

A. Positive

B. Negative

C.Zero

D. None of these

24 Work is a:

A. Scalar quantity

B. Vector quantity

C.Base quantity

D. None of these

25 Which of the following types of force can do no work on the particle on which it acts

A. Frictional force

B. Gravitational force

C.Electric force

D. Centripetal force

26 Work is a Quantity

A. Vector

B. Scalar

C.Non-physical

D. None of these

27 Work done by the force of friction is always

A. Positive

B. Zero

C.Negative

D. Maximum

28 The unit of work in CGS system is

A. Joule

B. Erg

C.Dyne

D. Watt

29 Which of the following type of force can do no work on the particle on which it acts:

A. Frictional force

B. Gravitational force

C.Electric force

D. Centripetal force

30 The work performed on an object does not depend on:

A. Force applied

B. Angle at which force is inclined to the displacement

C.Initial velocity of the object

D. Displacement

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