A tuning fork produced four beats per second with a second 5

A tuning fork produced four beats per second with a second, 512-Hz tuning fork. Beats means that you will hear alternating loud and soft noises. How many \"loud\" noises would you hear per second in this case?

Solution

Beat frequency = 4 beats / s

i.e., number of loud noises (or) number of soft noises per second is four

Frequency of First tuning fork f = ?

Frequency of second tuning fork f \'= 512 Hz

We know beat frequency = f \' ~ f

                                     = f \' - f (or) f -f \'

f \' - f = 4                                 f - f\' = 4

     f = f \' - 4                                f = f \' + 4

       = 512 - 4 = 508 Hz                = 512 + 4 = 516 Hz