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

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 # 2

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

Question # 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:

Question # 4

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

Question # 5

Work is always done on a body when:

Question # 6

A solar cell converts energy of the Sun into:

Question # 7

Work is a:

Question # 8

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

Question # 9

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

Question # 10

When velocity of moving body is doubled, the quantity which is also doubled is its:

Question # 11

The total work done in moving the body up and then down through the same height in a gravitational field is equal to:

Question # 12

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

Question # 13

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

Question # 14

A body moves a distance of 10 m along a straight line under the action of a force of 5 N and work done in 25J. The angle which the force makes with the direction of motion will be

Question # 15

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

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 The consumption of energy by a 60 W bulb in 2 minutes is:
A. 2 watt-hour
B. 120 watt-hour
C. 30 watt-hour
D. None of these
2 Which of the following type 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
3 The unit of work in CGS system is
A. Joule
B. Erg
C. Dyne
D. Watt
4 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.
5 Watt x second is unit of:
A. Force
B. Work
C. Power
D. None of these
6 The work done on the body will be zero if:
A. No force is applied on the body
B. Force is applied but no displacement
C. Angle between F(force) and d(displacement) is 90°
D. All of these are correct
7 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
8 Area under the force displacement graph gives
A. Power
B. Work
C. Heat
D. Energy
9 1 J = ________?
A. 107erges
B. 10-7erges
C. 105erges
D. 10-5erges
10 The ultimate source of money sources of energy is:
A. Sun
B. Air
C. Water
D. Petroleum

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