A tunning fork produces 4 beats per second with another tunning fork of frequency 256 Hz. The first one is now loaded with a little wax and the beat frequency is found to increase to 6 per second. What was the original frequency of the tunning fork.

loading with wax decreases frequency. Therefore, original frequency=252 Hz

DEAR Vrushabh

As Beat frequency =f_1-f₂₌4 (given)

so is f2=256 f1 could be 252 or 260

Now f₁ loaded so its frequency will increase

f_1-f₂₌6

here it''s asked about original frequency therefore f₁=260.

thanks.

original frequency will be 252 hz..!!!