A light source S is placed at the centre...

A light source S is placed at the centre of a glass sphere of radius R and refractive index `mu`. The maximum angle `theta` with the x-axis (as shown in the figure) an incident light ray can make without suffering total internal reflection is

`cos^-1 (1/mu)`

`sin^-1 (1/mu)`

`tan^-1 (1/mu)`

there will never be total internal reflection

Text Solution

Verified by Experts

The correct Answer is:

`anglei=0^@` for all values of `theta`, as the rays fall normal to sphere at all point.

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