Angle between wavefront & rays of light | Wave optics | Physics | Khan Academy

Wavefronts are always perpendicular to the rays of light, always! Let's explore why.
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Created by Mahesh Shenoy

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Sir I have a doubt.
If we look the wave fromed in water, from a direct above view it appears to be a longitudinal wave, and if we view it through the plane which contains the water, waves appear to be transverse..
What is actually happening?....

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