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 product of:

Question # 2

Which of the following is not a unit of power:

Question # 3

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

Question # 4

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

Question # 5

The commercial unit of electrical energy is :

Question # 6

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 # 7

Work has the dimensions as that of

Question # 8

SI Unit of work is

Question # 9

Maximum work is done when force and displacement are

Question # 10

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

Question # 11

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

Question # 12

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

Question # 13

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

Question # 14

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:

Question # 15

A body moves a distance of 10 m among a straight line under the action of a force of 5 N. If the work done is 25 J, the angle which the force makes with the direction of motion of a body is:

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 Work is product of:
A. Force and velocity
B. Heat and energy
C. Force and displacement
D. None of these
2 A boy pulls a toy car through a distance of 5 m by applying a force of 0.5 N, which makes and 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
3 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
4 Escape velocity from surface of Moon as compared to that from Earth surface is:
A. Greater
B. Smaller
C. Equal
D. None of thes
5 A 100 Kg car is moving at the speed of 10 m/sec and comes to rest after covering a distance of 50 m. The amount of work done against the friction is:
A. +5 X 101J
B. +5 X 102J
C. +5 X 103J
D. +5 X 104J
6 Work is always done on a body when:
A. A force acts on it
B. It moves through certain distance
C. None of A or B is correct
D. Both A and B is correct
7 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
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:
A. Minimum Work
B. Maximum Work
C. Zero Work
D. Negative Work
9 SI Unit of work is
A. Nm-1
B. Joule
C. Nms
D. Both a and b
10 Most of the geysers occur in:
A. Volcanic regions
B. Magnetic regions
C. Northern region
D. None of these

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