Question # 1

Rate of doing work is called:

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Energy

Torque

Power

Moment

One Megawatt is equal to :

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1 × 106 w

1 × 102 kw

1015 w

Nil

If the velocity of the body becomes double then its kinetic energy will:

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Remain the same

Become double

Become four times

Become half

The unit of kinetic energy is:

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J

N

Km

Pa

The ability of a body to do work is known as

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power

energy

kinetic energy

potential energy

The energy present in our food is:

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Mechanical energy

Gravitational potential energy

Chemical energy

Nuclear energy

In Einstein's mass-energy equation, c is the

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Speed of sound

Speed of light

Speed of electron

Speed of Earth

A body possesses if it is capable to do work:

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Energy

Power

Force

All

If the force of 25 N pulls a stone through a distance of 5 cm in its direction the magnitude of work will be:

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5 J

125 J

175 J

200 J

Which of the following is non-renewable fossil fuel?

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Oil

Coal

Gas

All of these

Kinetic energy is possessed by a body by:

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Virtue of motion

Height

Rest

Nil

SI unit of work is:

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Joule

Coulomb

Ampere

Kelvin

Mathematically, % efficiency is defined as & nbsp

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Efficiency % required form or input/ total input energy x 100

Efficiency % input energy / output energy x 100

Efficiency % work / time x 100

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