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Q37 (UPPCS/2025) Science & Technology › Basic Science (Physics, Chemistry, Biology)

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 :
Code :

Result
Your answer: —  Â·  Correct: B

Explanation

Both the assertion and the reason are correct, and the reason perfectly explains the assertion. The pitch and quality of the human voice are primarily determined by the vocal cords located in the larynx. In adult men, the vocal cords are typically longer (approx. 17–25 mm) and thicker, which causes them to vibrate at a lower frequency, producing a deeper voice. In women, the vocal cords are shorter (approx. 12.5–17.5 mm) and thinner, leading to higher-frequency vibrations and a higher-pitched voice. This physiological difference in the dimensions of the vocal cords is the fundamental reason why the voices of men and women sound distinct.

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