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A tuning fork arrangement (pair) produce...

A tuning fork arrangement (pair) produces `4 beats//sec` with one fork of frequency `288cps`. A little wax is placed on the unknown fork and it then produces `2 beats//sec`. The frequency of the unknown fork is

A

286 cps

B

292 cps

C

294 cps

D

288 cps

Text Solution

Verified by Experts

The correct Answer is:
B
`f_A` = 288 cps, `f_("heat")` = 4 bps
After loading `[f_B darr]and f_("beat")darr`
i.e. `f_B -f_A = f_("beat")` (Possible)
`implies f_B = 288 + 4 = 292` cps.
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