Pitch of Sound and Frequency – Rankers Physics

Sound Wave and its Characteristics: Practice Problem & Solution

Assertion (A): When we start filling an empty bucket with water, the pitch of sound produced goes on decreasing. Reason (R): The frequency of man voice is usually higher than that of woman.  
(1) Both (A) & (R) are true and the (R) is the correct explanation of the (A)
(2) Both (A) & (R) are true but the (R) is not the correct explanation of the (A)
(3) (A) is true but (R) is false
(4) Both (A) and (R) are false

Solution Explained:

To solve this problem, we apply the core principles of Sound Wave and its Characteristics. Understanding the underlying formula is key to arriving at the correct answer below:

As water fills a bucket, the air column length decreases, increasing the resonant frequency and thus the pitch. So, Assertion (A) is false. The average frequency of a man's voice is lower than a woman's voice. So, Reason (R) is also false.

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