Question # 1

The devise used to measure the atmosphere pressure is:

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Rain gauge

Vacuum cleaner

Screw gauge

Barometer

The ratio of output to input is called:

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work

Efficiency

Force

All of above

In SI system , unit of density is:

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kgm^-1

kgm^-3

kgm^-2

kgm

1 nm have meters.

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10^-3 m

10^-6 m

10^-9 m

10^-10m

Value of g increases with the:

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Increase in mass of the body

Increases in altitude

decrease the altitude

None of the above

Everybody in the universe attracts other body with a force which is

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Directly proportional to the product of their masses

Inversely proportional to the product of their masses

Directly proportional to the distance between them

Directly proportional to the square of the distance between them

Which one is more elastic ?

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Rubber

Steel

Copper

All has equal values

Latent heat of vaporization is denoted by:

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H1

Hm

Hv

Hf

Value of g on mercury is ___________ ms^-2.

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25.94

3.7

8.87

1.62

The earth temperature is :

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300 K

200 k

100 K

50 K

Which of the substance is the lightest one?

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Copper

Mercury

Aluminim

Lead

A string is stretched by two equal and opposite forces 10 N each. The tension in the string is

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Zero

5N

10N

20N

When equal opposite forces are added then the resultant force is ______________

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Double

Triple

Zero

None of these

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