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

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

Question # 2

Work done is independent of path followed in _______

Question # 3

The tidal energy is due to gravitational pull of :

Question # 4

The work performed on an object does not depend on:

Question # 5

A solar cell converts energy of the Sun into:

Question # 6

The ultimate source of money sources of energy is:

Question # 7

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

Question # 8

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

Question # 9

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 # 10

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

Question # 11

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 # 12

If work is done at the rate of 2 k j per second, then total work done is half an hour will be:

Question # 13

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 the direction of motion will be:

Question # 14

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

Question # 15

Work done is lowering the bucket into the well 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 The ultimate source of money sources of energy is:
A. Sun
B. Air
C. Water
D. Petroleum
3 Which one is conservative force
A. Electric force
B. Frictional force
C. Normal force
D. Air resistance
4 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
5 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
6 Work is a
A. Scalar quantity
B. Vector quantity
C. Base quantity
D. None of these
7 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.
8 A solar cell converts energy of the Sun into:
A. Heat energy
B. Magnetic energy
C. Light energy
D. Sound energy
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 A two Kg block is held 1 m above the floor for 50 seconds, the work done is:
A. Zero
B. 10.2 J
C. 100 J
D. 980 J

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