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

Work is a Quantity

Question # 2

The energy stored int he water of the dam is:

Question # 3

Work done is independent of path followed in _______

Question # 4

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 # 5

The power of an electric generating station is expressed in:

Question # 6

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

Question # 7

Work done in lower and bucket into the well is:

Question # 8

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

Question # 9

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

Question # 10

When two protons are brought are brought closer potential energy of both of them:

Question # 11

The angle between centripetal force and displacement of the body moving in a circle is:

Question # 12

A 100 kg car is moving at a speed of 10 m/sec and comes to rest after covering a distance of 50 m. the amount of work done against friction is:

Question # 13

When force and displacement are perpendicular to each other than work is equal to

Question # 14

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 # 15

The unit of work in CGS system is

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 Which of the following types of force can do no work on the particle on which it acts
A. Frictional force
B. Gravitational force
C. Electric force
D. Centripetal force
2 SI Unit of work is
A. Nm-1
B. Joule
C. Nms
D. Both a and b
3 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
4 A 2 kg block is held 1 m above floor for 50 seconds. The work done is:
A. Zero
B. 10.2 J
C. 100 J
D. 980 J
5 The dimensions of work
A. [MLT-1]
B. [MLT-2]
C. [ML2T-2]
D. [MLT]
6 The space around the earth within which it expects a force of attraction on other bodies is known as:
A. Nuclear field
B. Conservative field
C. Electric field
D. Gravitational field
7 The work performed on an object does not depend on:
A. Force applied
B. Angle at which force is inclined to the displacement
C. Initial velocity of the object
D. Displacement
8 The work performed on an object does not depend on:
A. Force applied
B. Angle at which force is inclined to the displacement
C. Initial velocity of the object
D. Displacement
9 The energy stored int he water of the dam is:
A. Electric energy
B. Kinetic energy
C. Potential energy
D. None of these
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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