MCQ
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
    $\frac{\pi }{2}$
  • $\pi $
  • D
    $2\pi $

Answer

Correct option: C.
$\pi $
c
(c) When light is reflected from denser medium, a phase difference of $\pi $always occurs.

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