1.

An organ pipe enclosed at one end has fundamental frequency of 1500 Hz. The maximum number of overtones generated by this pipe which a normal person can hear, is :

Answer»

6
11
9
13

Solution :Fundametnal FREQUENCY `v_(1) = 1500 `Hz
maximum frequency which a man can hear
= 20, 000 Hz
`therefore` In n is the number of overtones GENERATED then
`V. = (2N + 1) v_(1) `
20,000 = (2n + 1) `xx` 1500 `""rArr ` n= 6
Correct choice is (a).


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