Question # 1

Unit of strain is:

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Nm^-2

Nm

N

No unit

When the stress crosses the elastic limit, then the body will :

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Break

Permanently deformed

Plasticity

None

According to Archimedes, up thrust is equal to :

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Weight of displaced liquid

Volume of displaced liquid

Mass of displaced liquid

None of these

At a height of 30 km, atmospheric pressure is:

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101300 Pa

1000 Pa

10000 Pa

101325 Pa

_______________ was a pupil of Galileo.

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Einstein

Robert

Al Razi

Torricelli

At sea level height if mercury is:

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1000 cm

10 cm

1m

76 cm

The force exerted perpendicularly on unit of area of an object is called:& nbsp

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strain

young's modulus

pressure

buoyant force

The vacuum in barometer is called:

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Deep vacuum

Mercury vacuum

Torricellian vacuum

None of above

What should be approximate length of a glass tube to construct of water barometer?

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0.5 m

1 m

2.5 m

11 m

In which of the following state molecules do not leave their position:

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Solid

Liquid

Gas

Plasma

Pressure is quantity:

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Scalar

Vector

Constnat

Dependent

According to hook's law stress is directly proportional to :

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Area

Volume

Strain

Force

The density of a substance can be found with the help of

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Pascal's law

Hooke's law

Archimedes principle

Principle of floatation

The devise used to measure the atmosphere pressure is:

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Rain gauge

Vacuum cleaner

Screw gauge

Barometer

___________ varies with height.

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Weight

Pressure

Mass

Energy

SI unit of pressure is pascal, which is equal to

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104 Nm-2

1 Nm-2

102 Nm-2

103 Nm-2

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