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Important questions on Thermal Expansion

HARD

The volume of an air bubble is doubled as it rises from the bottom of a lake to its surface. If the atmosphere pressure is of mercury and the density of mercury is times that of lake water the depth of lake is :

A

B

C

D

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HARD

The density of a liquid at is and at , the coefficient of cubical expansion of the liquid is 

A

B

C

D

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HARD

An aluminium measuring rod, which is correct at measures the length of a line as at . If thermal coefficient of linear expansion of aluminium is .The correct length of line is :

A

B

C

D

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HARD

A manufacture marks the thermometer wrongly. At 0 C it reads -10 C, at 100 C it reads 85C. Then the reading at 50 C will be :

A

40 C

B

32.5 C

C

37.5 C

D

42.5 C

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HARD

A solid whose volume does not change with temperature floats in a liquid. For two different temperatures and of the liquid, fractions and of the volume of the solid remain submerged in the liquid. The coefficient of volume expansion of the liquid is equal to

A

B

C

D

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HARD

Two uniform brass rods  and  of length  and  and radii  and  respectively are heated to the same temperature. The ratio of the increase in the volume of  to that of  is

A

B

C

D

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HARD

Find the temperature at which the fundamental frequency of an organ pipe is independent of small variation in temperature in terms of the coefficient of linear expansion () of the material of the tube.

A

B

C

D

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HARD

A vertical column long at balances another column of same liquid long at . The coefficient of absolute expansion of the liquid is:

A

B

C

D

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HARD

Coefficient of volume expansion of mercury is . If the density of mercury at is 13.6 g/cc, then its density at is 

A

13.11 g/cc

B

52.11 g/cc

C

16.11 g/cc

D

26.11 g/cc

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HARD

A metal rod is shaped into a ring with a small gap. If this is heated

This question has multiple correct options
A

The length of the rod will increase

B

The gap will decrease

C

The gap will increase

D

The diameter of the ring will increase in the same ratio as the length of the rod

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