Question

derived the relation between the critical angle and the refractive index of the denser medium relative to the rarer medium?? ​

Answer 1

Answer:

Snell's Law (also known as the Second Law of refraction) is applied to derive the relation between critical angle and refractive index. Hence, take a light ray having an incident angle i, refractive angle r = 90 degrees, critical angle = C and refractive index of rarer and denser medium be µa and µb respectively.