Q. Given below are two statements, one is labelled as Assertion (A) and the other as Reason (R).
Assertion (A): Voices of men and women are different.
Reason (R): Length and thickness of vocal cord is different in men and women.
Select the correct answer from the code given below :
a) Both (A) and (R) are true, but (R) is not the correct explanation of (A)
b) (A) is false, but (R) is true
c) (A) is true, but (R) is false
d) Both (A) and (R) are true and (R) is the correct explanation of (A)
Correct Answer: d) Both (A) and (R) are true and (R) is the correct explanation of (A)
Question from UPPSC Prelims 2025
Explanation:
Assertion (A) is true: men and women typically have different voices, most notably in pitch.
Reason (R) is also true: males generally develop longer and thicker vocal cords (vocal folds) at puberty compared to females. Longer, thicker (more massive) vocal cords vibrate more slowly, producing a lower fundamental frequency (pitch), while shorter, thinner cords vibrate faster, producing a higher pitch. Thus, the anatomical difference stated in (R) directly explains the observed difference in voices in (A).
