Assertion (A): Voices of men and women are different. Reason (R): Length and thickness of vocal cord is different in men and women.
- ABoth (A) and (R) are true and (R) is the correct explanation of (A)
- B(A) is true, but (R) is false
- C(A) is false, but (R) is true
- DBoth (A) and (R) are true, but (R) is not the correct explanation of (A)
Show answer and explanation
Correct answer: (a) Both (A) and (R) are true and (R) is the correct explanation of (A)
Explanation
(A) is true: adult male voices have a lower pitch (fundamental frequency) than female voices.
(R) is true: after puberty males develop longer and thicker vocal cords, which vibrate more slowly.
Slower vibration means lower frequency, so (R) directly explains (A).