Question # 1

If 1N is force and body is displaced to 1m than work is :

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2 J

1 J

3 J

4 J

The ratio of useful output to input energy is called:

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Power

Energy

Efficiency

Horse power

Work is done when force displace inits own _____________

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Way

Method

Direction

None

The unit of work is :

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J

N

Ns

m

Which one of the following converts light energy into electrical energy?

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Electric bulb

Electric generator

Photo cell

Electric cell

In a dam the water energy is called:

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Heat energy

Electrical energy

G.P.E

Mechanical enrgy

Solar energy is a type of.

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Renewable

Non-renewable

Natural

None

What kind of waste is produced by nuclear power plant?

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Carbon di oxide

Radio active

Fuels

Toxic material

1 mega watt is equal to:

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10² W

10³ W

10⁵ W

10⁶W

Mass-Energy equation was given by:

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Newton

Einstein

Joule

Pascal

A body OF mass 10 kg taken to height of 5m:

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P.E = 500 J

P.E = 50 J

P.E = 5 J

P.E = 5000 J

If the direction of motion of the force is perpendicular to the direction of motion of the body, then work done will be:

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Maximum

Minimum

Zero

None of the above

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Physics 9th Class English Medium Unit 6 Online Test MCQs With Answers

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