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

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

Grade:12th pass

2 Answers

Abhinav
askIITians Faculty 387 Points
7 years ago
When light is reflected off a more dense medium with higher index of refraction, crests get reflected as troughs and troughs get reflected as crests. The wave is said undergo a 1800 change of phase on reflection. The net effect of the phase change is that the reflected ray ``jumps ahead" by half a wave length.
shubham sharda
360 Points
7 years ago
the is a phase shift of pi radians when light reflects from glass which was initially travelling in air.

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