Question

(6
In a Young's double slit experiment, the fringe
width is found to be 0.4 mm. If the whole
apparatus is immersed in water of refractive
index 4/3 without disturbing the geometrical
arrangement, the new fringe width will be
(A) 0.30 mm (B) 0.60 mm
(C) 0.53 mm (D) 0.45 mm​

Answer 1

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