hi, i know that the entry ray of light into a medium will exits parrallel to the entry ray. The problem ask me to prove it. i have drawn a diagram and done the mathematical calculation. i just can't put it into words, could some one please help me out.(adsbygoogle = window.adsbygoogle || []).push({});

and 2nd part to that question is

Derive an expression for the offset of the entry and exiting rays if the

thickness of the sheet is T and the ray enters at an angle of incidence of θ.

aaaaaahhh....im so stress out..because of this simple question.

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# Homework Help: Optic/Wave question

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