Wave Optics · Interference
In a Young's double slit experiment set up, the two slits are kept 0.4 mm apart and screen is placed at 1 m from slits. If a thin transparent sheet of thickness 20 m is introduced in front of one of the slits then central bright fringe shifts by 20 mm on the screen. The refractive index of transparent sheet is given by , where is .
We corrected a printing error in the original paper
Source printed “0.4. mm”; “centre bring fringe”.
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