Question

For a ray of light passing from air to glass the angle of incidence is 50◦
, the
corresponding angle of refraction being 30◦
. Find the refractive index of glass.

Answer 1

Answer:

Explanation:Snell's law states that ratio of sine of angle of incidence to sine of angle of refraction is a constant. This constant is called the refractive index of the medium. Hence:

Answer 2

Answer:

sin i ÷ sin r = constant

But constant is the refractive index

∴ sin 50 ÷ sin 30 = nm

sin gets cancelled and zeroes too

∴5÷3 ≈ 1.6

Explanation: