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 done is independent of path followed in _______

Question # 2

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

Question # 3

Work done along a closed path in a gravitational field is:

Question # 4

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

Question # 5

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 # 6

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

Question # 7

Work is a scalar product of

Question # 8

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

Question # 9

The work performed on an object does not depend on

Question # 10

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

Question # 11

Most of the geysers occur in:

Question # 12

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

Question # 13

Maximum work is done when force and displacement are

Question # 14

The work done in moving a body between two points in a conservative field is independent of the

Question # 15

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

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 The amount of coal used since 1945 up till now as compared to that used in the whole of history before that is
A. Much more
B. Very small
C. No amount at all
D. None of these
2 The commercial unit of electrical energy is :
A. K Watt
B. KWH
C. Horse power
D. Joule
3 The value of escape velocity of Earth planet comes out to be:
A. 11 m/sec
B. 11 km/sec
C. 11 km/hour
D. 11 cm/sec
4 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
5 A solar cell is made from:
A. Iron
B. Silicon
C. Germanium
D. Copper
6 When force and displacement are perpendicular to each other than work is equal to
A. Unity
B. Infinity
C. Zero
D. -Fd
7 The tidal energy is due to gravitational pull of :
A. sun
B. moon
C. Mars
D. None of these
8 If work is done at the rate of 2 k j per second, then total work done is half an hour will be:
A. 0.5 Kwn
B. 2 Kwh
C. 1 Kwh
D. None of these
9 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
10 Work has the dimensions as that of
A. Torque
B. Angular momentum
C. Linear momentum
D. Power

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