Q. The phase difference between incident wave and reflected wave is $180{^\circ}$ when light ray
A) Enters into glass from air
B) Enters into air from glass
C) Enters into glass from diamond
D) Enters into water from glass
Explanation
(a) When light reflects from denser surface phase change of $\pi$ occurs
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.