Question

A ray of light strikes one face of an equiangular glass prism(n = 1.52) at an angle ofincidence of 32.0°. Trace the path ofthe light ray through the glass and find the angles of incidenceand refraction at each surface.
1° (refraction atfirst surface)
2° (incidence atsecond surface)
3° (refraction atsecond surface)

Answer 1

First surface, use law of refraction:

.

         sin32 = 1.52 *sinθ₂               θ₂ = 20.40

.

now find the angle of incidence on the rightside:     θ₃ = 60- 20.40 =  39.60

.

And then find the angle of refraction on the rightside:   1.52 * sin39.60 =sinθ₄

.

         θ₄= 75.67