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 work done by a force keeping an object in circular motion with constant speed is:

Question # 2

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

Question # 3

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

Question # 4

Which one is conservative force

Question # 5

A labourer carrying a distance a load on his head moves from rest on a horizontal road to another point where he comes to rest. He has done:`

Question # 6

Work done along a closed path in a gravitational field is:

Question # 7

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

Question # 8

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 # 9

The tidal energy is due to gravitational pull of :

Question # 10

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

Question # 11

Which force is not a conservative force?

Question # 12

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

Question # 13

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 # 14

The work done by a force, keeping an object in circular motion with constant speed is:

Question # 15

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

Question # 16

Work is a scalar product of

Question # 17

Maximum work is done when force and displacement are

Question # 18

Work has a dimension as that of:

Question # 19

Work done is independent of path followed in _______

Question # 20

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:

Question # 21

The commercial unit of electrical energy is :

Question # 22

Work is a

Question # 23

A 100 Kg car is moving at the speed of 10 m/sec and comes to rest after covering a distance of 50 m. The amount of work done against the friction is:

Question # 24

Escape velocity from surface of Moon as compared to that from Earth surface is:

Question # 25

Work is a:

Question # 26

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

Question # 27

The dimensions of work

Question # 28

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

Question # 29

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

Question # 30

Area under the force displacement graph gives

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 Work done is lowering the bucket into the well is:
A. Zero
B. Positive
C. Negative
D. None of these
2 SI Unit of work is
A. Nm-1
B. Joule
C. Nms
D. Both a and b
3 Work is product of:
A. Force and velocity
B. Heat and energy
C. Force and displacement
D. None of these
4 The Space around the Earth within which it exerts a force of attraction on other bodies is known as
A. Nuclear field
B. Conservative field
C. Electric field
D. Gravitational field
5 Work is always done on a body when:
A. A force acts on it
B. It moves through certain distance
C. None of A or B is correct
D. Both A and B is correct
6 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
7 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
8 Tick the conservation force:
A. Tension in a string
B. Air resistance force
C. Elastic spring
D. Frictional force
9 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
10 The power of an electric generating station is expressed in:
A. Kilo Jule
B. Kilowatt-hour
C. Kilo watt
D. Watt

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