2 tuning forks A and B, when sounded together produce 4 beats. when B is loaded with wax, the beat frequency remains same. if frequency of A is 212 Hz, then frequency of B is?
The Attempt at a Solution
since the beat frequency is 4 and frequency of A is 212 Hz, the frequency of B should be either 216 or 208. B is waxed which means it's frequency is decreased. if we assume the frequency of B as 216, on waxing the beat frequency decreases and considering the latter, waxing increases the beat frequency. but in the given question, it says beat frequency remains same.how could i solve this?