Question

A gas bubble released at the bottom of the lake grows in size as it rises to the surface of the lake. Give reason.

Answer 1

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➡ It is noticed that as the gas bubble formed at the bottom of a lake, rises, it grows in size. The reason is that when the bubble is at the bottom of the lake, total pressure exerted on it is the sum of the atmospheric pressure and the pressure due to water column.

➡ Now, as tha gas bubble rises, due to decrease in depth, the pressure due to water column also decreases, so the total pressure exerted on that gas bubble also decreases. When the bubble reaches the liquid surface, total pressure exerted on it becomes just equal to the atmospheric pressure which is minimum and so the size of bubble on surface becomes maximum.


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Answer 2

❤ Here is ur detailed answer ❤




It is noticed that as the gas bubble formed at the bottom of a lake, rises, it grows in size. The reason is that when the bubble is at the bottom of the lake, total pressure exerted on it is the sum of the atmospheric pressure and the pressure due to water column.  Now, as tha gas bubble rises, due to decrease in depth, the pressure due to water column also decreases, so the total pressure exerted on that gas bubble also decreases. When the bubble reaches the liquid surface, total pressure exerted on it becomes just equal to the atmospheric pressure which is minimum and so the size of bubble on surface becomes maximum