Question

caliculate the refractive index of glass with respect to air if it's critical angle is 40° 21'​

Answer 1

Answer:

30°

Explanation:

We know that the critical angle is given by:-

C=sin

−1

μ

1

where μ=refractive index of denser medium relative to rarer medium

Here, μ=2

Hence, C=sin

−1

2

1

⟹C=30

o

Answer-(C)