Question # 1

If a person is not moving when he lifts a load on his head work is:

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FS

FS Cos𝜽

FS Sin𝜽

0

Solar energy is a type of.

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Renewable

Non-renewable

Natural

None

Kinetic energy is possessed by a body by:

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Virtue of motion

Height

Rest

Nil

Ability of body to do work due to its height is called.

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potential energy

kinetic energy

gravitational potential energy

elastic potential energy

Fossils fuels are usually compound of:

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Carbon

Hydrogen

Carbon & Hydrogen

None of these

The energy present in our food is:

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Mechanical energy

Gravitational potential energy

Chemical energy

Nuclear energy

The work is negative if the angle between force and displacement is:

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0°

45°

90°

180°

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

Fossil fuels are usually:

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Carbon di oxide

Hydrogen

Hydrocarbons

Carbon monoxide

If a body does work at the rate of 1 Js^-1then its power will be:

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KW

1 MW

1 W

None of these

Einstein's mass-energy equation relation is:

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E =1/2 mc²

E =mc²

E =m²c

E = 2 mc²

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 these

In which of the following state molecules don not leave their position?

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Solid

Liquid

Gas

Plasma

The energy stored in coal is

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Heat Energy

Kinetic 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

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