What will be the angle of refraction for a li | vedclass

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(D) When a light ray is incident normally (perpendicularly) on the surface separating two media,the angle of incidence $(i)$ is $0^{\circ}$.According

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(D) When a light ray is incident normally (perpendicularly) on the surface separating two media,the angle of incidence $(i)$ is $0^{\circ}$.According to Snell's Law,$n_1 \sin(i) = n_2 \sin(r)$.Since $i = 0^{\circ}$,then $\sin(i) = 0$.Therefore,$n_1 	imes 0 = n_2 \sin(r)$,which implies $\sin(r) = 0$.Thus,the angle of refraction $(r)$ is $0^{\circ}$.This means the light ray passes undeviated through the interface.

What will be the angle of refraction for a light ray incident normally at the surface (in $^{\circ}$)?

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