Question

Explain What is critical angle?
And what is Total Internal Refraction? ​

Answer 1

Explanation:

you can google it

it will tell you your answer

because I can't help you with this . I am too young to answer

Answer 2

Explanation:

Critical angle

The critical angle is the angle of incidence where the angle of refraction is 90°. The light must travel from an optically more dense medium to an optically less dense medium.