Properties Of Solids And Liquids Question 314

Question: When a large bubble rises from the bottom of a lake to the surface, its radius doubles. If atmospheric pressure is equal to that of column of water height H, then the depth of lake is [AIIMS 1995; AFMC 1997]

Options:

A) H

B) 2H

C) 7H

D) 8H

Show Answer

Answer:

Correct Answer: C

Solution:

P1V1=P2V2 therefore(H+h)ρg×43πr3

=H×43π(2r)3

H+h=8H \ h=7H



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