Question

a ray of light incident on angle of 45 on rectangular glass slab having refractive index root 2 from air .Find angle of refraction.Take refractive index of air as 1 answer is r=30​

Answer 1

Answer:

sin i / sin r = √2

sin 45 / sin r = √2

sin r = 1/2

hence, r = 30

Answer 2

Answer:

sin i /sin r=constant

sin 45 /sin r=$\sqrt{2}$

sin 45 /sin r=1/2

sin r=$30^{0}$

Explaination:

As, sin i /sin r=constant