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

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

Question # 2

Work is always done on a body when:

Question # 3

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

Question # 4

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

Question # 5

Work done is maximum when angle between force and displacement is

Question # 6

Which of the following type of force can do no work on the particle on which it acts:

Question # 7

A solar cell converts energy of the Sun into:

Question # 8

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:

Question # 9

The field in which work done is moving body between two points depends upon the path followed is called:

Question # 10

Work is a

Question # 11

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

Question # 12

Work done is maximum when angle between force and displacement is:

Question # 13

Maximum work is done when force and displacement are

Question # 14

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

Question # 15

The types of mechanical energy is/are:

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 The ultimate source of money sources of energy is:
A. Sun
B. Air
C. Water
D. Petroleum
2 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
A. 60°
B. 90°
C. 30°
D. 0°
3 1 J = ________?
A. 107erges
B. 10-7erges
C. 105erges
D. 10-5erges
4 SI Unit of work is
A. Nm-1
B. Joule
C. Nms
D. Both a and b
5 Which of the following is not a unit of power:
A. J-sec
B. Watt
C. N m/sec
D. Horsepower
6 The dimensions of work
A. [MLT-1]
B. [MLT-2]
C. [ML2T-2]
D. [MLT]
7 When force and displacement are perpendicular to each other than work is equal to
A. Unity
B. Infinity
C. Zero
D. -Fd
8 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
9 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
10 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

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