Question

what is total internal reflection​

Answer 1

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Now imagine an angle at which the light ray on getting refracted is parallel to the normal. This is called the critical angle. Now even an angle of 0.0001 degrees more will cause the light ray to refract back into its own medium. This can be called reflection. And we call it total internal reflection.

Answer 2

Answer:

When a ray of light goes from denser medium to rare medium, the refracted ray bends away from the normal.

Now if the angle of incidence is greater then the critical angle, the incident ray is totally internally reflected.

THIS PHENOMENON IS KNOWN AS TOTAL INTERNAL REFLECTION.

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