Question

the absolute refractive index of water is 4/3.what is the critical angle

Answer 1

Answer:

Explanation:

Critical angle=sin invers(1/refractive index)

So critical angle =sin^-1(3/4)

Answer 2

Answer:

air n water = 4/3

Relation between refractive index and critical angle is given by air n medium = 1/ Sin C

Sin C = 1/ air n water = 1/ (4/3) = ¾ = 0.75

C = Sin-1 (0.75) = 48.50.