Question

what is critical angle ?? with explanation ..neat diagram

Answer 1

Hey friend your answer is here
A critical angle is the angle of incidence in the denser medium corresponding to which the angle of refraction in the rarer medium is 90°

Answer 2

The critical angle occurs when 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.

✌✌ hope you like my answer ✌❤