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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 $=\mu$, is introduced in the path of the beam. The convergence point is shifted by
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The correct answer is:
$t\left(1-\frac{1}{\mu}\right)$ away
The correct option is $\mathbf{1} t\left(1-\frac{1}{\mu}\right)$ away
Normal shift $\Delta x=\left(1-\frac{1}{\mu}\right) t$ and shift takes place in direction of ray.
Normal shift $\Delta x=\left(1-\frac{1}{\mu}\right) t$ and shift takes place in direction of ray.
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