Please solve q 126?

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1 Answer
Ananda Dasgupta
Apr 4, 2018

#7H#

Explanation:

Since the radius doubles, the volume increases eight-fold as the bubble reaches the surface.

Assuming that the temperature of the air inside the bubble does not change as it rises up, the initial pressure must have been eight times the atmospheric - i.e. equivalent to a height of #8H# of water. This consists of the pressure of the atmosphere along with that due to the water. The latter must be #7H#

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