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

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

Question # 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 is 25J. the angle which the force makes with the direction of motion will be:

Question # 3

1 J = ________?

Question # 4

Energy stored in the spring of a watch is called

Question # 5

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

Question # 6

The work done on the body will be zero if:

Question # 7

In the force applied is parallel to the direction of motion, then work done is:

Question # 8

The work done by a force, keeping an object in circular motion with constant speed is:

Question # 9

The energy stored int he water of the dam is:

Question # 10

A solar cell converts energy of the Sun into:

Question # 11

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

Question # 12

Work done is lowering the bucket into the well is:

Question # 13

When a force of 0.5 N displaces a body through a distance of 2m in the direction of force, the work done is:

Question # 14

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

Question # 15

Work has a dimension as that of:

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 A field in which the work done in moving a body along closed path is zero is called
A. Nuclear Field
B. Conservative field
C. Gravitational field
D. Non-conservative field
2 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
3 The unit of work in CGS system is
A. Joule
B. Erg
C. Dyne
D. Watt
4 Work has the dimension as that of:
A. Torque
B. Angular momentum
C. Linear momentum
D. Power
5 When force and displacement are perpendicular to each other than work is equal to
A. Unity
B. Infinity
C. Zero
D. -Fd
6 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.
7 Most of the geysers occur in:
A. Volcanic regions
B. Magnetic regions
C. Northern region
D. None of these
8 Work-energy principle states that work done on the body by applied force is equal to change in:
A. Potential energy
B. Kinetic nergy
C. Linear momentum
D. None of these
9 The tidal energy is produced due to rotation of Earth relative to:
A. Moon
B. Sun
C. Oceans
D. Water
10 When a wall is pushed by a person very strongly, he has done:
A. Maximum work
B. Zero work
C. Positive work
D. Negative work

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