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

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 # 2

The commercial unit of electrical energy is :

Question # 3

The unit of work in CGS system is

Question # 4

Tick the conservative force

Question # 5

Work has the dimensions as that of

Question # 6

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

Question # 7

Power is a :

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

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

Question # 10

The amount of coal used since 1945 up till now as compared to that used in the whole of history before that is

Question # 11

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 # 12

Watt x second is unit of:

Question # 13

The space around the earth within which it expects a force of attraction on other bodies is known as:

Question # 14

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

Question # 15

The space around the earth in which its gravitational force acts on a body is called

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 The tidal energy is produced due to rotation of Earth relative to:
A. Moon
B. Sun
C. Oceans
D. Water
2 The work done in moving a body between two points in a conservation field is independent of the:
A. Direction
B. Force applied
C. Path followed by the body
D. Power
3 If one newton force acts on a body and displaces the body through 1m work done on body is
A. 1 dyne
B. 1 joule
C. 1KJ
D. 1 Watt
4 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
5 Most of the geysers occur in:
A. Volcanic regions
B. Magnetic regions
C. Northern region
D. None of these
6 Tick the conservation force:
A. Tension in a string
B. Air resistance force
C. Elastic spring
D. Frictional force
7 When a falling body hits ground, its KE changes to _____ energy.
A. Potential
B. Chemical
C. Mechanical
D. sound and heat
8 The unit of work in CGS system is
A. Joule
B. Erg
C. Dyne
D. Watt
9 Work is a:
A. Scalar quantity
B. Vector quantity
C. Base quantity
D. None of these
10 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

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