February 21, 2017

Homework Help: Physics

Posted by confused on Thursday, January 24, 2013 at 3:22pm.

What is the angle of refraction of a light ray that enters the surface of a calm lake from air at an angle of 45o to the normal? The refractive index of water is 1.333.

I don't even know how to start this or what the formula is. Thanks for your help in advance. It really is appreciated.

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