Question # 1

The devise used to measure the atmosphere pressure is:

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Rain gauge

Vacuum cleaner

Screw gauge

Barometer

The earth temperature is :

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300 K

200 k

100 K

50 K

Rocket works on principle of ______________

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Action Reaction

Law of inertia

Mass energy

Nil

In which case it is easy for the tyre to roll over:

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Rough ground

Smooth ground

Same

None

Centripetal force always acts _________ to the motion:

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Opposite

Parallel

Perpendicular

Upward

Matter has basically ___________ states.

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4

3

Both a & b

None

The single force that has the same effect as the combined effect of all the force to be added is called a

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Opposite force

Single force

Resultant force

Resultant vector

A temperature rise in the environment disturbs life called:

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Air pollution

Land pollution

Noice pollution

Thermal pollution

Leslie's cube is filled with

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Cold water

Hot water

Mercury

Air

According to SI-Units , internsity of light is measured in.

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meters

second

moles

candela

The braking system of cars, buses etc also works on

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Newton's law

Pascal law

Faraday law

Bohr's law

If the force of 25 N is acting along the string to balance the weight then tension in string is

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25 N

50 N

Zero

None

Mercury is used as thermometric material because it has

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Uniform thermal expansion

Low freezing point

Small heat capacity

All the above properties

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