Question # 1

Rate of doing work is called

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Energy

Torque

Power

Momentum

The formula of y component of force ' F ' is:

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F cos 𝜽

F Sin 𝜽

F tan 𝜽

Tan^-1 𝜽

Wood, cork, cotton, wool, rubber are the eamples of:

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Conductor

Thermal conductor

Insulator

both a & b

Fossil fuels are usually:

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Carbon di oxide

Hydrogen

Hydrocarbons

Carbon monoxide

The value of latent heat of fusion ice is:

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3.36 x 10^-5 Jkg^-1

3.36 x 10⁵Jkg^-1

3.36 x 10⁶Jkg^-1

None of these

The first man who gave the idea of gravity:

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Hero

Einstein

Newton

Faraday

The work done will be zero when the angle between the force and the distance is:

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45^o

90^o

60^o

180^o

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

A force of 10 N is making and angle of 30^owith the horizontal. Its horizontal component will bw:

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4 N

5 N

7 N

8.7 N

The first man who came up with the idea of gravity was?

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Issac Newton

Einstein

Faraday

J,S Joseph

_____________ can neither be created nor be destroyed.

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Light

Force

Energy

Weight

How much force is needed to body of mass 10 kg from falling:

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100 N

150 N

200 N

300 N

Latent heat of fusion of water is:

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3.36 x 10¹⁰ Jkg^-1

93.6 x 10¹⁰Jkg^-1

3.36 x 10⁵Jkg^-1

None of these

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