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

Work done is independent of path followed in _______

Question # 2

The tidal energy is due to gravitational pull of :

Question # 3

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

Question # 4

The dimensions of work

Question # 5

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

Question # 6

Work done by the force of friction is always

Question # 7

Work is a:

Question # 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:`

Question # 9

SI Unit of work is

Question # 10

Area under the force displacement graph gives

Question # 11

A solar cell converts energy of the Sun into:

Question # 12

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

Question # 13

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

Question # 14

Teh consumption of energy by a 1000 watt heater in half an hour is:

Question # 15

Work done is lowering the bucket into the well is:

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 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
2 The field in which work done is moving body between two points depends upon the path followed is called:
A. Conservative filed
B. Non-conservative field
C. Electric field
D. None of these
3 Tick the conservative force
A. Tension in a string
B. Air resistance
C. Elastic spring
D. Frictional force
4 Work done on a body by gravity in lifting it up to certain height is
A. Maximum
B. Minimum
C. Zero
D. Negative
5 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:
A. +5 X 101J
B. +5 X 102J
C. +5 X 103J
D. +5 X 104J
6 The work done on the body will be zero if:
A. No force is applied on the body
B. Force is applied but no displacement
C. Angle between F(force) and d(displacement) is 90°
D. All of these are correct
7 A boy pulls a toy car through a distance of 5 m by applying a force of 0.5 N, which makes and angle of 60° with the horizontal. The work done by the boy is:
A. 1.25 J
B. 12.5 J
C. 125 J
D. None of these
8 A body moves a distance of 10 m along a straight line under the action of a force of 5 N. If the work done is 25 J, the angle which force makes with the direction of motion of a body is:
A. 0°
B. 30°
C. 60°
D. 90°
9 The dimensions of work
A. [MLT-1]
B. [MLT-2]
C. [ML2T-2]
D. [MLT]
10 When the body is 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

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