ECAT Pre Computer Science Chapter 4 MCQ Test With Answer

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 one newton force acts on a body and displaces the body through 1m work done on body is

Question # 2

Work has the dimensions as that of

Question # 3

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

Question # 4

Maximum work is done when force and displacement are

Question # 5

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 # 6

A solar cell converts energy of the Sun into:

Question # 7

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

Question # 8

The commercial unit of electrical energy is :

Question # 9

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

Question # 10

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

Question # 11

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

Question # 12

Work is a:

Question # 13

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

Question # 14

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 # 15

The amount of coal used since 1945 up till now as compared to that used in the whole of history before that is

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 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
2 Tick the conservation force:
A. Tension in a string
B. Air resistance force
C. Elastic spring
D. Frictional force
3 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
4 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
5 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
6 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
7 Most of the geysers occur in:
A. Volcanic regions
B. Magnetic regions
C. Northern region
D. None of these
8 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:`
A. Minimum work
B.
Maximum work
C. Zero work
D. Negative work
9 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
10 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°

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