Question # 1

The energy stored in coal is

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Heat Energy

Kinetic energy

Chemical energy

Nuclear energy

The ratio of useful output to input energy is called:

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Power

Energy

Efficiency

Horse power

The product of force and displacement is called;

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Work

Efficiency

Power

Energy

The energy stored in coal is

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Heat energy

Kinetic energy

Chemical energy

Nuclear energy

The energy stored in dam is:

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Potential energy

Kinetic energy

Chemical enegy

Nuclear energy

One horse power is equal to:

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746 W

749 W

764 W

794 W

What type of conversion is done candle burning?

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Chemical __ ;light

Chemical __ heat

Both a & b

None of above

In a dam the water energy is called:

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Heat energy

Electrical energy

G.P.E

Mechanical enrgy

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

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Kinetic energy

Potential energy

Elastic energy

Geothermal energy

A crate is moved by pulling the rope attached to it. it moves 10 m on straight horizontal read by a force of 100 N. How much work will be done when the rope is making an angle of 30° with the road?

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5 Joules

86 Joules

707 Joules

866 Joules

Kilowatt - hour is unit of _____________

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Power

Energy

Work

K.e

In Einstin's mass energy equation, c is the :

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Speed of sound

Speed of light

Speed if volume

None of these

The kinetic energy of the body of mass 1000 kg moving a speed of 20 ms^-1 will be:

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2 x 10² J

2 x 10³J

2 x 10⁵J

2 x 10⁸J

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

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