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A source of sound gives five beats per s...

A source of sound gives five beats per second when sounded with another source of frequency `100s^-1`. The second harmonic of the source together with a source of frequency `205s^-1` gives five beats per second. What is the ferquency of the source?

A

`95 sec^(-1)`

B

`100 sec^(-1)`

C

`105 sec^(-1)`

D

`205 sec^(-1)`

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