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A and B are two wires whose fundamental ...

A and B are two wires whose fundamental frequencies are 256 and 382 Hz respectively. How many beats in 2 seconds will be heard by the third harmonic of A and secondd harmonic of B?

Text Solution

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Frequency of 3rd harmonic Of A
`n_(1)=3xx256=768`
Frequency of second harmonic of B
`n_(2)=2xx382=764`
Number of beats `//` sec `=n_(1)-n_(2)=768-764=4`
Number of beats in 2 sec. `=2xx4=8`
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