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A soda-water bottle is falling freely. The bubbles of the gas rise in the water of the bottle.

(a) True

(b) False

I had been asked this question during an internship interview.

This is a very interesting question from Friction and Forces in section Laws of Motion of Engineering Physics I

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Correct answer is (b) False

The explanation: The water in the freely falling bottle is in the state of weightlessness. Consequently, the pressure in water does not increase with depth. No upthrust acts on the bubbles and they do not rise.

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