Q.

The first overtone of a stretched wire of given length is 320 Hz. The first harmonic is :

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a

320 Hz

b

160 Hz

c

480 Hz

d

640 Hz

answer is B.

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Detailed Solution

Frequency of first overtone or second harmonic (n2) = 320Hz. So, frequency of first harmonic n1=n22=3202=160Hz
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The first overtone of a stretched wire of given length is 320 Hz. The first harmonic is :