Question

Two tuning fork having frequency 300 Hz & 305 Hz produce beat phenomena. Then (i) How many beats produce is 5 sec. (ii) Determine minimum time interval in which maximum intensity become min.

Answer 1

Correct Answer - (i) 25 beats
(ii) `(1)/(10)s`
`Deltaf=305-300=5Hz`
(i) `:.` Total beats produced in `5s=5 xx 5 = 25`
(ii) Time interval in which max intensity becomes minimum
`= (1)/(2)xx(1)/(Deltaf)=(1)/(2)xx(1)/(5)=0.1sec`