Light waves from two coherent sources superimpose at a point. The waves, at this point,
Channel: Doubtnut
Date: 2020-07-26

Light waves from two coherent sources superimpose at a point. The waves, at this point, can be expressed as `y_(1) = a sin [10^(15) pi t]` and `y_(2)a sin [10^(15) pi t + phi]`. Find the resultant amplitude if phase difference `phi` is   (a) zero  (b) `pi//3`  (c) `pi`  Also find the frequency (Hz) of resultant wave in each case.