In Young's double-slit experiment, d = 0 . 1 mm , D = 20 cm , and λ = 5460 Å , the angular position of first dark fringe will be

Question

In Young's double-slit experiment, d = 0 . 1 mm , D = 20 cm , and λ = 5460 Å , the angular position of first dark fringe will be, 0.08 o, 0.24 o, 0.32 o, 0.16 o

MARKS App · Accepted Answer

Position of dark fringe y = 2 n - 1 λ 2 × D d = λ 2 × D d ∴ Also θ = y D = λ 2 d = 2730 × 10 - 6 × 180 π = 0.16 o

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