When two waves of almost equal frequencies n_(1) and n_(2) reach at a point simultaneously, what is the time interval between successive maxima ?

When two waves of almost equal frequencies n_(1) and n_(2) reach at a

1.	When two waves of almost equal frequencies n_(1) and n_(2) reach at a point simultaneously, what is the time interval between successive maxima ?
Answer» SOLUTION :Time INTERVAL between two successive maxima when two WAVES having slighly different frequencies `n _(1) and n_(2).` Superpose at some point at some instant of time is, `T = (1)/( f _(b)) = (1)/( n _(1) - n_(2)) (if n _(1) GT n _(2))` OR `T =(1)/( f _(b)) = (1)/( n _(2) - n _(1)) (if n _(2) gt n _(1))`