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 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 # 2

Work done is maximum when angle between force and displacement is

Question # 3

A solar cell is made from:

Question # 4

A laborer carrying a load on his head moves from the rest on a horizontal road to another point where he comes to rest. He has done:

Question # 5

The energy stored int he water of the dam is:

Question # 6

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 # 7

Teh consumption of energy by a 1000 watt heater in half an hour is:

Question # 8

The types of mechanical energy is/are:

Question # 9

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

Question # 10

Which one is conservative force

Question # 11

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

Question # 12

The dimensions of work

Question # 13

Power is a :

Question # 14

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

Question # 15

The ultimate source of money sources of energy is:

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 Escape velocity from surface of Moon as compared to that from Earth surface is:
A. Greater
B. Smaller
C. Equal
D. None of thes
2 Work done is maximum when angle between force and displacement is:
A. 0°
B. 90°
C. 180°
D. None of these
3 The Space around the Earth within which it exerts a force of attraction on other bodies is known as
A. Nuclear field
B. Conservative field
C. Electric field
D. Gravitational field
4 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°
5 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.
6 Which of the following is not a unit of power:
A. J-sec
B. Watt
C. N m/sec
D. Horsepower
7 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
8 Watt x second is unit of:
A. Force
B. Work
C. Power
D. None of these
9 Work has the dimensions as that of
A. Torque
B. Angular momentum
C. Linear momentum
D. Power
10 Work done is independent of path followed in _______
A. Gravitational field
B. Magnetic field
C. Electric field
D. All of these

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