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

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

Question # 2

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

Question # 3

Work is a always done on a body when

Question # 4

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

Question # 5

The consumption of energy by a 60 W bulb in 2 minutes is:

Question # 6

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 # 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

Which of the following is not a unit of power:

Question # 9

Work done on a body by gravity in lifting it up to certain height is

Question # 10

Work is a

Question # 11

The energy stored int he water of the dam is:

Question # 12

Work done is lowering the bucket into the well is:

Question # 13

The work performed on an object does not depend on:

Question # 14

Tick the conservation force:

Question # 15

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

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 The commercial unit of electrical energy is :
A. K Watt
B. KWH
C. Horse power
D. Joule
2 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
3 A solar cell is made from:
A. Iron
B. Silicon
C. Germanium
D. Copper
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 When two protons are brought are brought closer potential energy of both of them:
A. Increases
B. Decreases
C. Remains same
D. None of these
6 The Space around the Earth within which it exerts a force of attraction on other bodies is known as
A. Nuclear field
B. Conservative field
C. Electric field
D. Gravitational field
7 Work is always done on a body when:
A. A force acts on it
B. It moves through certain distance
C. None of A and B is correct
D. Both A and B is correct
8 When velocity of moving body is doubled, the quantity which is also doubled is its:
A. K.E.
B. Acceleration
C. Momentum
D. P.E.
9 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
10 Which of the following is not a unit of power:
A. J-sec
B. Watt
C. N m/sec
D. Horsepower

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