Question

Two tunning forks A and B have frequencies 256 Hz and
262 Hz respectively. A produces some beats per second
with an unknown tunning fork. Same unknown tunning fork
produces double beats per second with B. The frequency
of unknown tunning fork is

(1) 262 Hz
(2) 260 Hz
(3) 250 Hz
(4) 300 Hz​

Answer 1

Answer:

it may be the 2nd option

due to 2 beats with B which is either 260 or 264 so .......