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

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

Question # 2

Work has the dimension as that of:

Question # 3

Energy stored in the spring of a watch is called

Question # 4

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 the direction of motion will be:

Question # 5

1 J = ________?

Question # 6

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

Question # 7

The commercial unit of electrical energy is :

Question # 8

The work performed on an object does not depend on:

Question # 9

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

Question # 10

A solar cell is made from:

Question # 11

Work is a:

Question # 12

Work is a:

Question # 13

Which one is conservative force

Question # 14

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

Question # 15

The work done on the body will be zero if:

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 Work-energy principle states that work done on the body by applied force is equal to change in:
A. Potential energy
B. Kinetic nergy
C. Linear momentum
D. None of these
2 When a body moves against the force of friction on a horizontal plane, the work done by the body is:
A. Positive
B. Negative
C. Zero
D. None 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 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
5 Work done is maximum when angle between force and displacement is:
A. 0°
B. 90°
C. 180°
D. None of these
6 Most of the geysers occur in:
A. Volcanic regions
B. Magnetic regions
C. Northern region
D. None of these
7 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
8 Work done in lower and bucket into the well is:
A. Zero
B. Positive
C. Negative
D. None of these
9 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
10 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. 0.5 J
B. 2 J
C. 0.25 J
D. 1 J

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