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A beam of light is converging towards a point \( \mathrm{I} \). A plane
P parallel plate of glass of thickness \( t \), refractive index \( \mu \) is introduced in the path of the beam. The convergent point is shifted by (assume near normal incidence) :
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- (A) \( t\left(1-\frac{1}{\mu}\right) \) away
(B) \( t\left(1+\frac{1}{\mu}\right) \) away
(C) \( t\left(1-\frac{1}{\mu}\right) \) nearer
(D) \( t\left(1+\frac{1}{\mu}\right) \) nearer
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