Slit Experiment (JEE Mains 2019) In Young’s double-slit experiment, the separation between the slits is d and the screen is placed at a distance D from the slits. The wavelength of light used is λ. If y is the distance of the nth bright fringe from the central bright fringe, then the value of n is
(A) (dD/λ)2 (B) (dD/λ) (C) (d/D) (D) (d/D)2
The answer is (B). The distance of the nth bright fringe from the central bright fringe is given by y = (nλD)/d.
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