Q. A light ray travelling in glass medium is incident on glass-air interface at an angle of incidence$\theta$. The reflected $(R)$ and transmitted $(T)$ intensities, both as function of $\theta,\ $are plotted. The correct sketch is

A) [image:9_image16.emf]
B) [image:9_image17.emf]
C) [image:9_image17.emf]
D) [image:9_image18.emf]
Explanation

(c) After critical angle reflection will be 100% and transmission is 0 %. Options (b) and (c) satisfy this condition. But option (c) is the correct option. Because in option (b) transmission is given 100% at $\theta\ = \ 0{^\circ},$ which is not true
$\therefore$ Correct answer is (c).

Dr. Abubacker
Reviewed by Dr. Abubacker

Physics Educator & NEET/JEE Specialist

Ph.D. in Physics with 19+ years of teaching experience.