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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 second harmonic of B?

A

4

B

8

C

16

D

zero

Text Solution

Verified by Experts

The correct Answer is:
B
Beat frequency=`3upsilon_(1)-2upsilon_(2)=3xx256-2xx382`
`=768-764=4s^(-1)`
Number of beats produced in 2 seconds`=4 xx 2 = 8`
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