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

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ECAT Pre General Science Physics Chapter 4 Work and Energy

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Question # 1

If force and displacement are in opposite direction, the work done is taken as

Question # 2

Teh consumption of energy by a 1000 watt heater in half an hour is:

Question # 3

Area under the force displacement graph gives

Question # 4

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 # 5

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

Question # 6

A solar cell is made from:

Question # 7

Which of the following is not a unit of power:

Question # 8

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

Question # 9

The unit of work in CGS system is

Question # 10

Work done in lower and bucket into the well is:

Question # 11

The ultimate source of money sources of energy is:

Question # 12

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

Question # 13

In the force applied is parallel to the direction of motion, then work done is:

Question # 14

The work performed on an object does not depend on:

Question # 15

The dimensions of work

Question # 16

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 # 17

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

Question # 18

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 # 19

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

Question # 20

The tidal energy is due to gravitational pull of :

Question # 21

Work is a

Question # 22

The work performed on an object does not depend on:

Question # 23

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 # 24

When force and displacement are perpendicular to each other than work is equal to

Question # 25

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 # 26

If work is done at the rate of 2 k j per second, then total work done is half an hour will be:

Question # 27

The power of an electric generating station is expressed in:

Question # 28

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

Question # 29

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 with the direction of motion will be:

Question # 30

Work has the dimensions as that of

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 Tick the conservative force
A. Tension in a string
B. Air resistance
C. Elastic spring
D. Frictional force
2 A laborer carrying a load on his head moves from the rest on a horizontal road to another point where he comes to rest. He has done:
A. Minimum Work
B. Maximum Work
C. Zero Work
D. Negative Work
3 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
4 SI Unit of work is
A. Nm-1
B. Joule
C. Nms
D. Both a and b
5 Which force is not a conservative force:
A. Frictional force
B. Gravitational force
C. Electric force
D. Elastic spring force
6 Energy stored in the spring of a watch is called
A. Potential energy
B. Kinetic energy
C. Nuclear energy
D. Elastic potential
7 Work done in lower and bucket into the well is:
A. Zero
B. Positive
C. Negative
D. None of these
8 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
9 Work is a:
A. Scalar quantity
B. Vector quantity
C. Base quantity
D. None of these
10 In the force applied to parallel to the direction of motion, then the work done is:
A. Positive
B. Negative
C. Zero
D. None of these

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