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Spherical Mirror Common Terms & Rays

Total interna...

Question

Total internal reflection takes place when light is incident

A

On a concave mirror

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B

From air on a plane glass surface at any angle

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C

From air on a plane glass surface at a certain given angle

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D

From inside a glass cube placed in water at a certain given angle

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Solution

The correct option is D From inside a glass cube placed in water at a certain given angle
Total internal reflection is the phenomenon which takes place when light from denser medium is refracted to a rarer medium with an angle greater than or equal to the critical angle.
An glass is a denser medium than water.
Option D is correct.

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