Question # 1

S.I unit of pressure is :

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Nm^-2

Newton

Joule

Watt

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

To every action there is always an equal but __________ reaction:

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Same

Parallel

Opposite

Equal

The Earth is surrounded by a cover of air called

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Atmosphere

Solid

Environment

Surroundings

Friction causes _____________

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Heat

Light

Mass

Weight

Relation between force and momentum is:

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ΔP/F

ΔP/t

ΔPF

None

Racing cars are made stable by :

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Increasing their speed

Decrease their mass

Lowering their center of gravity

Decreasing their width

Waking on earth is the example of

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1st law of motion

Second law of motion

Third law of motion

Law of Momentum

Length of a rod is L∘ on temperature T∘. After heating upto temperature T, its length L becomes

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L = L∘ (1 + αΔT)

L = L∘ (1 + ΔT)

L = L∘ (1 - αΔT)

L = L∘ (1 -ΔT)

Value of 'g' on surface of moon is:

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1.62 ms^-2

3.7 ms^-2

9.2 ms^-2

10 ms^-2

Celsius temperature is converted into Fahrenheit temperature using the formula

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F = 1.8 C + 32

F = 1.8 C - 32

F = 1.4 C + 32

F = 1.4C - 32

When a hammer raised up its energy will be:

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Mechanical energy

Gravitational potential energy

Chemical energy

Nuclear energy

After tilting if body come back to its original position then the body is in:

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Stable equilibrium

unstable equilibrium

Neutral equilibrium

Equilibrium

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