In a Young's double-slit experiment , the slits are separated by `0.28` mm and screen is placed
Channel: Doubtnut
Date: 2020-08-30

In a Young's double-slit experiment , the slits are separated by `0.28` mm and screen is placed `1.4` m away . The distance between the central bright fringe and the fourth bright fringe is measured to be `1.2` cm . Determine the wavelength of light used in the experiment .