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

Question # 2

Work has a dimension as that of:

Question # 3

Energy stored in the spring of a watch is called

Question # 4

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

Question # 5

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

Question # 6

Work done is independent of path followed in _______

Question # 7

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

Question # 8

A body moves a distance of 10 m among a straight line under the action of a force of 5 N. If the work done is 25 J, the angle which the force makes with the direction of motion of a body is:

Question # 9

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

Question # 10

Area under the force displacement graph gives

Question # 11

Watt x second is unit of:

Question # 12

Work is a scalar product of

Question # 13

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 # 14

SI Unit of work is

Question # 15

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

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 The field in which work done in moving a body between two points depends upon the path followed is called:
A. Conservative field
B. Non-conservative field
C. Electric field
D. None of these
2 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
3 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
4 The types of mechanical energy is/are:
A. Kinetic energy
B. Potential energy
C. Both of these
D. None of these
5 Work done is independent of path followed in _______
A. Gravitational field
B. Magnetic field
C. Electric field
D. All of these
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 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
8 A solar cell converts energy of the Sun into:
A. Heat energy
B. Magnetic energy
C. Light energy
D. Sound energy
9 Work done on a body by gravity in lifting it up to certain height is
A. Maximum
B. Minimum
C. Zero
D. Negative
10 Work is a
A. Scalar quantity
B. Vector quantity
C. Base quantity
D. None of these

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