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 tidal energy is produced due to rotation of Earth relative to:

Question # 2

The total work done in moving the body up and then down through the same height in a gravitational field is equal to:

Question # 3

A boy pulls a toy car through a distance of 5 m by applying a force of 0.5 N, Which makes an angle of 60° with the horizontal. The work done by the boy is:

Question # 4

Work done is maximum when angle between force and displacement is

Question # 5

A solar cell converts energy of the Sun into:

Question # 6

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

Question # 7

Work is a:

Question # 8

The power of an electric generating station is expressed in:

Question # 9

The commercial unit of electrical energy is :

Question # 10

The energy stored int he water of the dam is:

Question # 11

Work done along a closed path in a gravitational field is:

Question # 12

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

Question # 13

Work done is maximum when angle between force and displacement is:

Question # 14

A two Kg block is held 1 m above the floor for 50 seconds, the work done is:

Question # 15

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

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 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°
2 Watt x second is unit of:
A. Force
B. Work
C. Power
D. None of these
3 Work done in lower and bucket into the well is:
A. Zero
B. Positive
C. Negative
D. None of these
4 The work done by a force keeping an object in circular motion with constant speed is:
A. Zero J.
B. 0.1 J
C. 1 J
D. 0.01 J
5 If force and displacement are in opposite direction, the work done is taken as:
A. Positive work
B. Negative work
C. Zero work
D. Infinite work
6 The energy stored int he water of the dam is:
A. Electric energy
B. Kinetic energy
C. Potential energy
D. None of these
7 Work is a
A. Scalar quantity
B. Vector quantity
C. Base quantity
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 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
10 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

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