Question

What will the angle of refraction be for a ray of light passing from air into a sodium chloride crystal if the angle of incidence is 60.0°? The index of refraction of sodium chloride is 1.53.

Answer 1

The refracted angle is r= 34.47°

Step-by-step explanation:

According to snell's law the incident normal and refracted ray at the point of incidence all lie in the same plane

Given

incident angle i= 60°

refracted angle r= ?

index of refraction u= 1.53.

Applying the formula

`u= (sine (i))/(sine( r))`

solving for r

`1.53=( sine (60))/( sine( r))\\\1.53= (0.866)/( sine( r)) \\\ sine( r)= (0.866)/(1.53) \\\sine(r)= 0.566\\\r= sine^-0.566\\\r= 34.47`

r= 34.47°