Assertion (A) : A child produces a higher pitched sound compared to that of an adult
Reason (R): Pitch depends on the frequency of sound.

Options

A. A and R are correct and R is the correct explanation of A.
B. A and R are correct but R is not the correct explanation of A.
C. A is correct but R is not correct.
D. Both A and R are not correct.

Answer

B

Explanation

A child produces a higher pitched sound compared to that of an adult. Because pitch depends on the length and thickness of a vibrating body, i.e., vocal cord in this case. So, A is correct. The pitch depends on the frequency of sound. R is also correct but not the correct explanation of A.