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

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

Question # 2

Which of the following is not a unit of power:

Question # 3

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

Question # 4

Work is a scalar product of

Question # 5

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 # 6

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

Question # 7

If we draw a graph between d (along x-axis) and F (along y-axis) and get a straight line horizontal to x-axis, then area under this straight line represents:

Question # 8

A laborer carrying a load on his head moves from the rest on a horizontal road to another point where he comes to rest. He has done:

Question # 9

Area under the force displacement graph gives

Question # 10

The field in which work done in moving a body between two points depends upon the path followed is called:

Question # 11

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 # 12

The unit of work in CGS system is

Question # 13

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 # 14

Work done by the force of friction is always

Question # 15

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

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 A solar cell is made from:
A. Iron
B. Silicon
C. Germanium
D. Copper
2 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
3 When a falling body hits ground, its KE changes to _____ energy.
A. Potential
B. Chemical
C. Mechanical
D. sound and heat
4 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:
A. 1.25 J
B. 12.5 J
C. 125 J
D. None of these
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. 0.5 J
B. 2 J
C. 0.25 J
D. 1 J
6 Which one is conservative force
A. Electric force
B. Frictional force
C. Normal force
D. Air resistance
7 The tidal energy is due to gravitational pull of :
A. sun
B. moon
C. Mars
D. None of these
8 Tick the conservation force:
A. Tension in a string
B. Air resistance force
C. Elastic spring
D. Frictional force
9 Work done is maximum when angle between force and displacement is:
A. 0°
B. 90°
C. 180°
D. None of these
10 Which force is not a conservative force?
A. Frictional force
B. Gravitational force
C. Electric force
D. Elastic spring force

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