Question

A light ray strikes water to fused quartz at ∅¡=28°. What is the angle of refraction?

Answer 1

Use Snell’s law:

n(air). sin <i= n(water) sin<r…………..(1)

Here, n(air)=1

<i=angle of incidence =40 degree

<r= angle of refraction =29 degree

Put these values in equation (1) and get the value of n( water).

Answer 2

upper one is right

A light ray strikes water to fused quartz at ∅¡=28°. What is the angle of refraction?