Physics - Questions and Answers, General Study (GK)

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101.

If we want to calculate the pressure of a liquid at the bottom of vessel, the quantity which is not required to determine it, is

(a)surface area of the bottom of the vessel

(b)height of the liquid column

(c)density of the liquid

(d)acceleration due to gravity at the bottom of the vessel

Comment

Answer is: ANA

102.

The operating principle of a hydraulic press is

(a)Boyle's law

(b)Pascal's principle

(c)Archimedes' principle

(d)Newton's law of gravitation

Comment

Answer is: BNA

103.

Pressure at any pint of a liquid increases with

(a)density of the liquid

(b)acceleration due to gravity

(c)depth of the point from the free surface

(d)All of the above

Comment

Answer is: DNA

104.

Which one of the following is used by the mountaineers and the pilots to measure pressure?

(a)Simple barometer

(b)Fortin barometer

(c)Manometer

(d)Aneroid barometer

Comment

Answer is: DNA

105.

A gradual increase in the barometric height indicates which one of the following?

(a)coming of rain

(b)coming of a storm

(c)starting of cold weather

(d)coming of fair weather

Comment

Answer is: DNA

106.

Why do two ice blocks join to form one block when pressed together?

(a)Melting point of ice is lowered with increase in pressure

(b)melting point of ice increases with increase in pressure

(c)melting point of ice remains unchanged with increase in pressure

(d)melting point of ice is 0°C

Comment

Answer is: ANA

107.

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 statements given above is/are correct?

(a)only 1

(b)only 2

(c)both 1 and 2

(d)Neither 1 nor 2

Comment

Answer is: CNA

108.

Consider the following statements
1. the boiling point of a liquid increases on increasing the pressure on the free surface of the liquid.
2. on heating the solid substance if the volume of the substance increases, then by the application of pressure its melting point increases.
Which of the statements given above is/are correct?

(a)1 and 2

(b)only 1

(c)only 2

(d)none of these

Comment

Answer is: ANA

109.

An iron piece and a wooden piece have equal weights in air. If they are removed from air to vacuum

(a)the wooden piece appears to weight more

(b)the iron piece appears to weight more

(c)there is no change in the weight of either

(d)none of these

Comment

Answer is: ANA

110.

A floating body always displaces liquid equal to its own

(a)mass

(b)weight

(c)volume

(d)none of these

Comment

Answer is: BNA

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Physics - Questions and AnswersPage 11

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