Question # 1

The ultimate source of money sources of energy is:

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Sun

Air

Water

Petroleum

The work done on the body will be zero if:

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No force is applied on the body

Force is applied but no displacement

Angle between F(force) and d(displacement) is 90°

All of these are correct

Work-energy principle states that work done on the body by applied force is equal to change in:

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Potential energy

Kinetic nergy

Linear momentum

None of these

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

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Direction

Force applied

Path followed by the body `

Power

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

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60°

90°

30°

0°

If one newton force acts on a body and displaces the body through 1m work done on body is

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1 dyne

1 joule

1KJ

1 Watt

Work is a:

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Scalar quantity

Vector quantity

Base quantity

None of these

Area under the force displacement graph gives

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Power

Work

Heat

Energy

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:

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60°

90°

30°

0°

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:

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Power

Work

Pressure

None of these

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

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Maximum

Minimum

Zero

Unity

The energy stored int he water of the dam is:

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Electric energy

Kinetic energy

Potential energy

None of these

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

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11 m/sec

11 km/sec

11 km/hour

11 cm/sec

A solar cell is made from:

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Iron

Silicon

Germanium

Copper

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

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2 watt-hour

120 watt-hour

30 watt-hour

None of these

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ECAT Physics Chapter 4 Work and Energy Online Test MCQs With Answers

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