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Physics 17 Online
OpenStudy (anonymous):

what causes the light ray bend in a new medium

OpenStudy (anonymous):

Light travels at different speeds in different media. When the light enters into a medium, it gets slowed down or speed up depending upon the density of the new medium.

OpenStudy (anonymous):

According to the principle of least time(by Farmat),light ray follows the path that takes shortest time to reach from a point to another. That's why the light ray bend in a new medium(geometrical optics)

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