A slit of width `d` is illuminated by white light. For what value of `d` is the first
Channel: Doubtnut
Date: 2020-08-02

A slit of width `d` is illuminated by white light. For what value of `d` is the first minimum for red light of `lambda = 650 nm`, located at point `P` at `30^(@)`. For what value of the wavelength of light will the first diffraction maxima also fall at `P` ?