Question

A light ray is travelling from air to glass the reflected and refracted rays are perpendicular refractive index of glass is

Answer 1

$\mathfrak{The\:Answer\:is}$

Refractive Index = Sin i / Sin r

$\boxed{Hope\:This\:Helps}$

Answer 2

Answer:

tan i

Explanation:

i+r+90°=180°

i+r=90°

r=90°- i

u=sini÷sinr=sini÷sin (90-i )

=u=sini÷cosi=tani