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Question
Assertion (A): As the level of water in a tall measuring cylinder kept under running tap rises, the pitch of sound gradually increases.
Reason (R): Frequency of sound is inversly proportional to the length of the water column.
Options
Both (A) and (R) are true and (R) is correct explanation of (A).
Both (A) and (R) are true and (R) is not the correct explanation of (A).
(A) is true but (R) is false.
(A) is false but (R) is true.
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Solution
(A) is true but (R) is false.
Explanation:
As the height of the air column decreases with increasing water column, the frequency increases, thereby raising the pitch of the sound; hence, the assumption is accurate. The assertion is incorrect, as the frequency of sound is inversely related to the length of the air column, not the water column.
