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  • R and S are two wires whose fundamental frequencies are  and <img alt="422 \mathrm{hz

R and S are two wires whose fundamental frequencies are 324 \mathrm{hz} and 422 \mathrm{hz} respectively. How many beat in Third seconds will be heard by the Fifth harmonic of A and second harmonic of B ? 

Option: 1

1522


Option: 2

1500


Option: 3

1555


Option: 4

1222


Answers (1)

best_answer

Beat frequency =5 f_{1}-2 f_{2}

\begin{aligned} & 5 \times 324-2 \times 422 \\ = & 1620-844 \\ = & 7765^{-1} \end{aligned}

Number of beats Produced in 2 seconds =776 \times 2=1522 

Posted by

Ritika Kankaria

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