A) Bubble rises upwards because pressure at the bottom is less than that at the top.
B) Bubble rises upwards because pressure at the bottom is greater than that at the top.
C) As the bubble rises, its size increases
D) As the bubble rises, its size decreases
Correct Answer: B
Solution :
\[{{P}_{Bottom}}>{{P}_{Surface}}.\] So bubble rises upward. At constant temperature \[V\propto \frac{1}{P}\] (Boyle?s law) Since as the bubble rises upward, pressure decreases, then from above law volume of bubble will increase i.e. its size increases.
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