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

Watt x second is unit of:

Question # 2

Escape velocity from surface of Moon as compared to that from Earth surface is:

Question # 3

Work is product of:

Question # 4

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

Question # 5

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

Question # 6

Work is always done on a body when:

Question # 7

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

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

Work is a:

Question # 10

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 # 11

Which force is not a conservative force?

Question # 12

When the body is moves against the force of friction on a horizontal plane, the work done by the body is:

Question # 13

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

Question # 14

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

Question # 15

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

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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 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
3 The space around the earth within it exerts a force of attraction on other bodies of known as:
A. Nuclear field
B. Conservative field
C. Electric field
D. Gravitational field
4 Teh consumption of energy by a 1000 watt heater in half an hour is:
A. 5 Kwh
B. 0.5 Kwh
C. 2.5 Kwh
D. 3.2 Kwh
5 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
6 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
7 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
8 Area under the force displacement graph gives
A. Power
B. Work
C. Heat
D. Energy
9 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:
A. Power
B. Work
C. Pressure
D. None of these
10 The work done in moving a body between two points in a conservative field is independent of the
A. Direction
B. Force applied
C. Path followed by the body
D. Power

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