ECAT Pre Computer Science Chapter 4 MCQ Test With Answer

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

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

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ECAT Physics Chapter 4 Work and Energy

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Question # 1

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

Question # 2

SI Unit of work is

Question # 3

The unit of work in CGS system is

Question # 4

Work is a:

Question # 5

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

Question # 6

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 # 7

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

Question # 8

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

Question # 9

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

Question # 10

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

Question # 11

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

Question # 12

When two protons are brought are brought closer potential energy of both of them:

Question # 13

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

Question # 14

Which force is not a conservative force:

Question # 15

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

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 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
2 Work has the dimensions as that of
A. Torque
B. Angular momentum
C. Linear momentum
D. Power
3 Work done is lowering the bucket into the well is:
A. Zero
B. Positive
C. Negative
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 Escape velocity from surface of Moon as compared to that from Earth surface is:
A. Greater
B. Smaller
C. Equal
D. None of thes
6 The dimensions of work
A. [MLT-1]
B. [MLT-2]
C. [ML2T-2]
D. [MLT]
7 1 J = ________?
A. 107erges
B. 10-7erges
C. 105erges
D. 10-5erges
8 When a falling body hits ground, its KE changes to _____ energy.
A. Potential
B. Chemical
C. Mechanical
D. sound and heat
9 The total work done in moving the body up and then down through the same height in a gravitational field is equal to:
A. mgh
B. Its wight
C. Weight X height
D. Zero
10 Work is a:
A. Scalar quantity
B. Vector quantity
C. Base quantity
D. None of these

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