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Physics

Physics
The pressure exerted by a 760 mm column of mercury at 0°C is known as

1 poise
1 pascal
1 bar
1 atmosphere

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Physics
Stress can be defined as ________ quantity.

Scalar
Vector
Phasor
Tensor

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Physics
Quality of transmission depends upon

Both (A) and (B)
Nature of signal only
Nature of medium only
Neither A nor B

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Physics
The ringing of an electric bell in an enclosed evacuated glass bell jar is not heard outside because

The bell jar is too small
The ringing is not loud enough
There is no air or any other gas in the bell jar
The glass of the bell jar absorbs the sound waves

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Physics
Find the maximum velocity for the overturn of a car moving on a circular track of radius 100 m. The co-efficient of friction between the road and tyre is 0.2

0.14 m/s
1.4 km/s
140 m/s
14 m/s

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Physics
The commonly used coolant in refrigerators is

Nitrogen
Freon
Ammonia
Oxygen

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