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How would the angular separation of inte...

How would the angular separation of interence fringes in Young's double slit experiment change when the distance between the slits and screen is halved ?

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Since, `beta=(lambda D)/(d)" " :. Beta_(1)= (lambda. D/2)/d=1/2 (lambda D)/d=1/2 beta`.
Hence, the angular separation of interference fringes (fringe width) becomes half.
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