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Physics 9 Online
OpenStudy (andygarcia8587):

Light incident on a lake surface is partly reflected and partly refracted. How is the reflected ray different from the incident ray?

OpenStudy (maxgp):

The wave is going to have change it's phase by pi, when a wave crashes into a medium with higher index the wave is reflected and tranfered, the transfered wave has the same wave phase as the original but the reflected is shift by pi. Hope the image help.

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