Question # 1

The kinetic energy of a body of mass 2 kg is 25J, its speed is

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5 ms-1

12.5 ms-1

25 ms-1

50 ms-1

The energy of a body during the motion is called:

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Potential energy

Kinetic energy

Elastic P.E.

Heat energy

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

_____________ is an other unit of power.

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J

W

hp

W/J

A solar cell is also called:

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Photo cell

Generator

Battery

None

Work is zero when "F" and "S" will be:

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Parallel

Perpendicular

Anti parallel

Tangent

The energy possessed by a body due to height is called:

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P.E

K.E

Both

None

When a body is lifted through height h, the work done on it appears in the form of its

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Kinetic energy

Potential eneger

Elastic potential energy

Geothermal energy

The energy present in our food is:

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Mechanical energy

Gravitational potential energy

Chemical energy

Nuclear energy

Energy cannot be destroyed however it can be converted into some other forms. This is known as:

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Law of heat exchange

Law of conservation of energy

Law of conservation of momentum

None of these

Fossils fuels are usually compound of:

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Carbon

Hydrogen

Carbon & Hydrogen

None of these

What type of conversion is done candle burning?

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Chemical __ ;light

Chemical __ heat

Both a & b

None of above

The large unit of work is:

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Kilowatt

Kilo joul

Mega joul

Both B and C

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9th Class Physics Chapter 6 Work and Energy English Medium KPK Boards Online Mcqs MCQs With Answers

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