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Questions  

A beam of light is converging towards a point I on a screen. A plane glass plate whose thickness in the direction of the beam = t, refractive index = μ, is introduced in the path of the beam. The convergence point is shifted by

a
t1−1μ away
b
t1+1u away
c
t1−1μ nearer
d
t1+1μ nearer

detailed solution

Correct option is C

The normal shift =t1-1μ

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