Question

When light wave suffers reflection at the interface from air to glass, the change in phase of the reflected wave is equal to

• A. 0
• B. $\frac{\pi}{2}$
• C. $\pi$
• D. $2\pi$

Answer 1

Answer: (C)

$\pi$

Answer 2

When light is reflected from denser medium, a phase difference of $\pi$always occurs.