Question

Explain total internal reflection from law of refraction?
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Answer 1

Explanation:

when light rays pass from denser medium to rarer medium, and when and critical angle is more than angle of reflection , light rays come back in the same medium, this is total internal reflection

Answer 2

____Total internal reflection____

Total internal reflection, in physics, complete reflection of a ray of light within a medium such as water or glass from the surrounding surfaces back into the medium. The phenomenon occurs if the angle of incidence is greater than a certain limiting angle, called the critical angle.