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

Moderate

A

If both statement I and statement II are true and statement II is the correct explanation of statement I.
B

If both statement I and statement II are true but statement II is not the correct explanation of statement I.
C

If statement I is true but statement II is false
D

If both statement I and statement II are false

Solution

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

Also, the frequency of woman voice is usually higher than that of man.

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