Two coherent narrow slits emitting light of wavelength `lamda` in the same phase are placed
Channel: Doubtnut
Date: 23/08/2020

Two coherent narrow slits emitting light of wavelength `lamda` in the same phase are placed parallel to each other at a small separation of `3lamda` the light is collected on a screen S which is placed at a distance `D(gt gt lamda)` from the slits the smallest distance x such that the P is a maxima.