Unpolarised light is incident from air onto a glass plate

PHYSICS · Subjective · AP · Physics 2: Algebra-based · Waves Sound and Physical Optics · Waves Sound and Physical Optics

Problem

Unpolarised light is incident from air onto a glass plate. The reflected light is completely plane polarised when the angle of incidence is

56^{\circ}

. Calculate the refractive index of the glass plate (take refractive index of air

=1