The volume of an air bubble becomes three times as it rises from the bottom of a take to its surface. Assuming atmospheric pressure to be 75cm of Hg and the density of water to be 110 of the density of mercury, the depth of the take is :
A
5m
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B
10m
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C
15m
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D
20m
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Solution
The correct option is C15m Since, the temperature of the surroundings remains constant, we can safely assume that the process is isothermal.
Therefore, applying Boyle's Law
P1V1=P2V2
Let 1 denote the surface of water and 2 denote the depth