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 in lower and bucket into the well 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

Work is a scalar product of

Question # 4

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

Question # 5

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

Question # 6

The work performed on an object does not depend on:

Question # 7

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 # 8

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

Question # 9

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

Question # 10

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

Question # 11

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

Question # 12

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 # 13

Work has a dimension as that of:

Question # 14

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

Question # 15

A two Kg block is held 1 m above the floor for 50 seconds, the work done is:

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 Work done along a closed path in a gravitational field is:
A. Maximum
B. Minimum
C. Zero
D. Unity
2 A 100 kg car is moving at a speed of 10 m/sec and comes to rest after covering a distance of 50 m. the amount of work done against friction is:
A. +5 x 101J
B. +5 x 102J
C. +5 x 103J
D. +5 x 104J
3 A labourer carrying a distance a load on his head moves from 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
4 The tidal energy is due to gravitational pull of :
A. sun
B. moon
C. Mars
D. None of these
5 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:
A. 0°
B. 30°
C. 60°
D. 90°
6 Which of the following types 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
7 The unit of work in CGS system is
A. Joule
B. Erg
C. Dyne
D. Watt
8 Work done is maximum when angle between force and displacement is
A. 0°
B. 90°
C. 180°
D. None of these
9 Power is a :
A. Vector quantity
B. Base quantity
C. Scalar quantity
D. None of these
10 Which one is conservative force
A. Electric force
B. Frictional force
C. Normal force
D. Air resistance

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