Question

If the monochromatic source in Young’s double slit experiment is replaced by white light, then ______.

पर्याय

• there will be a central bright white fringe surrounded by a few coloured fringes.

• all bright fringes will be of equal width.

• interference pattern will disappear.

• there will be a central dark fringe surrounded by a few coloured fringes.

Answer 1

If the monochromatic source in Young’s double slit experiment is replaced by white light, then there will be a central bright white fringe surrounded by a few coloured fringes.

Explanation:

White light contains a combination of wavelengths that correspond to different colours. In the double-slit experiment, using white light results in interference across various colours, producing an interference pattern. However, because each colour has a distinct wavelength, they interfere differently, producing coloured fringes. The middle fringe will appear white as all colours combine to produce white light; the adjacent fringes will display colours due to discrepancies in the interference patterns across different wavelengths.