Question

Assertion. A bubble comes from the bottom of a lake to the top.
Reason. Its radius increases.
A. If both assertion and reason are true and reason is the correct explanation of assertion.
B. If both assertion and reason are true but reason is not the correct explanation of assertion.
C. If assertion is true and reason is false.
D. If both assertion and reason are false.

Answer 1

Correct Answer - B
If the bubble moves from the bottom to the top (i.e. from a higher pressure to a lower pressure ), pressure on it decrease and its volume ( and hence radius ) increase.