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

Maximum work is done when force and displacement are

Question # 2

The work done on the body will be zero if:

Question # 3

A 2 kg block is held 1 m above floor for 50 seconds. The work done is:

Question # 4

Work is always done on a body when:

Question # 5

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

Question # 6

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

Question # 7

SI Unit of work is

Question # 8

Work is a:

Question # 9

A solar cell converts energy of the Sun into:

Question # 10

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

Question # 11

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

Question # 12

Watt x second is unit of:

Question # 13

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

Question # 14

The energy stored int he water of the dam is:

Question # 15

Work has a dimension as that of:

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 The commercial unit of electrical energy is :
A. K Watt
B. KWH
C. Horse power
D. Joule
2 Work done is independent of path followed in _______
A. Gravitational field
B. Magnetic field
C. Electric field
D. All of these
3 Work done is maximum when angle between force and displacement is:
A. 0°
B. 90°
C. 180°
D. None of these
4 A 2 kg block is held 1 m above floor for 50 seconds. The work done is:
A. Zero
B. 10.2 J
C. 100 J
D. 980 J
5 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
6 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
7 The amount of coal used since 1945 up till now as compared to that used in the whole of history before that is
A. Much more
B. Very small
C. No amount at all
D. None of these
8 If work is done at the rate of 2 k j per second, then total work done is half an hour will be:
A. 0.5 Kwn
B. 2 Kwh
C. 1 Kwh
D. None of these
9 The angle between centripetal force and displacement of the body moving in a circle is:
A. 0°
B. 90°
C. 180°
D. None of these
10 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

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