A parallel beam of white light falls on a thin film of refractive index at an angle…

PHYSICS · Subjective · CBSE · Physics · Wave Optics · Wave Optics

Problem

A parallel beam of white light falls on a thin film of refractive index

\frac{4}{3}

at an angle of incidence

i=53^\circ

. What is the minimum film thickness if yellow light of wavelength

0.6\,\mu\mathrm{m}

is most intense in reflected light? Given

\tan53^\circ=\frac{4}{3}