Dalia S.

asked • 02/06/15

Find the angle of refraction and the critical angle of incidence

The index of refraction of glass is 1.5. Find the speed of light in glass, the angle of refraction in glass, if the light is incident from water at an angle of 40°, the critical angle of incidence for a glass-water interface

1 Expert Answer

By:

Sevag K. answered • 02/07/15

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Engineer, will help you understand Math, and Physics

Dalia S.

thank you so much, how would we find the critical angle of incidence for a glass-water interface?
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02/08/15

Sevag K.

Hi Dalia like the previous solution till i try to solve this question  
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02/09/15

Dalia S.

thank you i did :) i know that sinθcritial= n1/n2, but I'm not getting the right answer
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02/09/15

Sevag K.

u need to study more about sine and cosine properties. u cant get the answer because n1/n2 > 1 ;and  there is no sine for number greater than 1.
also study more about light ray traveling from less dense medium to higher dense medium.  
 
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02/09/15

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