Question

For the situation shown in figure, match the entries of Column I with Column II.
Assume thickness of films to be very small compared towavelenght of incident light.

Answer 1

A-2,3

B-2,4

C-1,4

D-1,2,3,4

When ${\mu }_1={\mu }_2$ all the beams will get passed through the medium. No reflection will take place. Sorry film I appears dark and it appears shiny grim the transmitted system. When ${\mu }_1>{\mu }_2$ neither reflection nor transmission takes place. When ${\mu }_1<{\mu }_2$ the beam get reflected in film I and no wave transmitted. When ${\mu }_1\ne {\mu }_2$ there is a chance for reflection and refraction.