Question # 1

The speed of light is equal to:

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3 x 10⁵ ms^-1

3 x 10⁸ms^-1

3 x 10⁹ms^-1

3 x 10²ms^-1

The formula for centripetal force is:

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Fc = mv2

Fc = mr2

Fc = mv2 / r

Fc = m/v

Why a coin stacked over remain undisturbed on pulling the paper strips quickly?

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Due to charge

Due to motion

Due to inertia

Due to material

The ability of a body to do work is known as

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power

energy

kinetic energy

potential energy

At the surface of Earth, the acceleration due to gravity 'g' is measured by using the formula

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g = GMe/R

GMe/R2

g = 2GMe/R2

g = GMe/2R

Formula of work is:

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F X S

F X V

F/S

S/F

Atmospheric pressure will increased if we move on earth:

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Upward

Downward

Left

right

_____________ can neither be created nor be destroyed.

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Light

Force

Energy

Weight

Rooms are heated using gas heaters by

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Conduction only

Convection and radiation

Radiation only

Convection only

Shining silvered surface is a best:

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Emitter

Absorber

Reflector

None of these

How does heat reaches form sun to earth through?

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Conduciton

Convection

Radiation

None

Ships and submarines float partially or completely according to:

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Newton's law

Pascal's law

Principle of floatation

None

A sugar bag of 1 kg has a momentum 25 kg m/s than its velocity is :

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v = 20 m/s

v = 25 kg

V = 25 m/s

v = 25 kg/ms-1

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