The refraction through the prisms is as shown | vedclass

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(C) Let $n_1$ be the refractive index of the medium outside the first surface, $n_2$ be the refractive index of the prism, and $n_3$ be the refractive

Vedclass · Accepted Answer

$c$ is correct if $n_{2} < n_{1}$ and $n_{2} = n_{3}$

Vedclass · Answer

(C) Let $n_1$ be the refractive index of the medium outside the first surface, $n_2$ be the refractive index of the prism, and $n_3$ be the refractive index of the medium outside the second surface.For a ray to bend towards the normal, it must travel from a rarer to a denser medium $(n_{incident} For a ray to bend away from the normal, it must travel from a denser to a rarer medium $(n_{incident} > n_{refracted})$.In case $(a)$, the ray bends towards the normal at the first surface $(n_1  n_3)$. Thus, $n_2 > n_1$ and $n_2 > n_3$ is correct.In case $(b)$, the ray enters undeviated at the first surface $(n_1 = n_2)$ and bends away from the normal at the second surface $(n_2 > n_3)$. This is correct.In case $(c)$, the ray bends towards the normal at the first surface $(n_1  n_3)$. The statement says $n_2 < n_1$ and $n_2 = n_3$, which contradicts the observed bending. Thus, $(c)$ is the wrong statement.

The refraction through the prisms is as shown. Pick out the wrong statement from the following. Path of the light ray in

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