Turning fork A of frequency 305 Hz produ...

Turning fork A of frequency 305 Hz produces 5 beats `s^(-1)` with another turing fork B. After filling tuning fork B, it produces 3 beats `s^(-1)` with A. The frequency of B before filling was

300 Hz

310 Hz

313 hz

308 Hz

Text Solution

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The correct Answer is:

`n_(B) = n_(A) +- 5 = 305 +- 5 = 310 or 300`
`n_(B) = n_(A) +- 3 = 305 +- 3 = 308 or 302`
Affer filling frequency increases before filling frequency decreases by difference at beat frequency
`n_(B) = 300 Hz`

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