Question # 1

The force exerted by earth on moon is :

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2.01× 1020 N

2.01× 1020 Kg

2.01× 1021 N

2.01× 1022 Kg m/s2

The unit of stress is:

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Newton

Pascal

Nm^-2

m³

Number of factors on which torque depends :

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2

3

4

5

The unit of heat capacity is:

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Jkg k

JK^-1

Jkg^-1K

J^-1kg^-1K^-1

Rate of change of momentum is equal to:

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Mass

Torque

Weight

Force

Near the surface of Earth, the gravitational field strength is

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10 Nkg-1

Zero

100 Nkg-1

1000 Nkg-1

Sin 45 is equal to:

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Zero

0.5

0.707

1

Specific heat for iron in joule per kilogram per kelvin is:

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387

920

470

903

A Leslie cube has faces:

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1

2

3

4

The velocity of geostationary satellites with respect to the Earth is:

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Maximum

Zero

Minimum

100 ms^-1

Formula of work is:

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F X S

F X V

F/S

S/F

If the applied force is 'F' and its moment arm is 'r' then torque is defined as

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τ = rF

τ = r2F

τ = r + F

τ = 2rF

The units of electric current is.

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Candela

Metre

Second

Ampere

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