Physics GK · all questions

Mechanical Physics
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Q101

In an experiment to determine the Young's modulus of a material of a wire, and the suspended mass are doubled. Then the Young's modulus of the wire

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Q102

On the basis of buoyancy theory, the ship floats in water, which scientist is first credited with identifying this principle?

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Q103

The tendency of a liquid drop to contract and occupy minimum area is due to

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Q104

Whether an object will float or sink in a liquid, depends on

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Q105

Which of the following is the by product derived from the refining process of petroleum?

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Q106

The terminal velocity of a small sized spherical body of radius r falling in a viscous liquid is proportional to

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Q107

If there were no gravity, which of the following will not be there for a fluid?

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Q108

Mobiles and Automobiles have brought about a revolution in the social life of Indians, especially in the rural, in terms of
1. Mobility of the people
2. Connectivity of the people
3. Sensitivity of the people
Select the correct answer:

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Q109

Consider the following statements.
1. Greater the value of Young's modulus of a material, larger is its elasticity.
2. Steel is more elastic than copper.
Which of the statement(s) given above is/are correct?

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Q110

The pressure at the bottom of a liquid tank does not depend on

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Q111

What is the relative density equal to-

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Q112

Ice floats on water because its density-

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Q113

The density of water will reach its maximum value at the temperature of

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Q114

While floating in a sea what part of an iceberg is above the surface of the sea?

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Q115

Two identical solid pieces, one of gold and other of silver, when immersed completely in water exhibit equal weights. When weighed in air (given that, density of gold is greater than that of silver),

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Q116

Consider the following statements.
1. At any point inside the liquid the pressure exerted by the liquid is directly proportional to its depth from the free surface.
2. At every point and in every direction, the pressure exerted inside the liquid at rest is same.
Which of the statement(s) given above is/are correct?

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Q117

If the liquid level falls in a capillary then radius of capillary will

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Q118

Object floats on water based on-

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Q119

Consider the following statements.
1. SI unit of atmospheric pressure is Nm^-2 or pascal and CGS unit is dyne/cm².
2. The barometer is a device by which the atmospheric pressure is measured.
3. The standard atmospheric pressure is the pressure required of 76 cm of Hg column or 760 mm of Hg column, which is equivalent to 1 atm.
Which of the statements given above is/are correct?

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Q120

What is the density of water-

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