In a Young's double slit experiment, the fringe width will remain… - Vidyadip

Question

In a Young's double slit experiment, the fringe width will remain same, if (D = distance between screen and plane of slits, d = separation between two slits and λ = wavelength of light used) (a) Both λ and D are doubled(b) Both d and D are doubled(c) D is doubled but d is halved(d) λ is doubled but d is halved

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Answer

(b) Both d and D are doubled

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