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Q.

Statement - I :The pattern and position of fringes always remain same even after the introduction of transparent medium in a path of one of the slits of young’s experiment
Statement - II :The central fringe bright or darkness is independent of the initial phase difference between the two coherence sources.

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a

Both statements I and II are correct

b

Statement-I is correct and statement-II is incorrect

c

Statement-I is incorrect and statement-II is correct

d

Both statements I and II are incorrect

answer is D.

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Detailed Solution

By putting the transparent medium like glass the pattern will shift on the screen given by y=Ddμ-1t

central fringe is always bright.

intensity on screen is given by Ir=4Iocos2ϕ2

the phase difference ϕ is always 00 for central bright baand

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