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March 30, 2015

Homework Help: Physics...please help

Posted by sophie on Monday, April 6, 2009 at 10:54pm.

A beam of light passes from air to ethanol, with index of refraction of 1.36. If the angle of incidence ( 1) is 30.0 degrees, then calculate the angle of refraction, after light passes through ethanol and enters into air.
A. 15.3 degrees
B. 21.6 degrees
C. 30.0 degrees
D. 39.8 degrees

I tried it and got C??

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