MHT CET 2024 Physics question

A plate of refractive index 1.6 is introduced in the path of light from one of the slits in Young's double slit experiment then

(A)the fringe width towards the side of the plate will decrease
(B)the central maximum will shift towards this sideCorrect
(C)number of fringes seen will decrease
(D)interference pattern will disappear

Answer: (B)

Solution

A transparent plate of thickness and refractive index over one slit adds an extra optical path to that beam. The zero path-difference (central maximum) point must therefore shift to the side where the path is shorter, i.e. towards the slit covered by the

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Question ID VK-095431