Question

Assertion :When we start filling an empty bucket with water, the pitch of sound produced goes on decreasing. Reason: The frequency of man voice is usually higher than that of woman.

• A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
• B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
• C. Assertion is correct but Reason is incorrect
• D. Both Assertion and Reason are incorrect

Answer 1

The correct option is D Both Assertion and Reason are incorrect

A bucket can be treated as a pipe closed at one end.
The frequency of the note produced $=\frac{V}{4L},$ here $L$ equal to the depth of water level from the open end. As the bucket is filled with water $L$ decreases, hence frequency increases. Therefore, the frequency or pitch of sound produced goes on increasing.
Also, the frequency of woman voice is usually higher than that of man.