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December 2, 2016

Homework Help: physics

Posted by julie on Thursday, April 7, 2011 at 5:01pm.

A beam of light is incident from air on the surface of a liquid. If the angle of incidence is 25.0° and the angle of refraction is 14.0°, find the critical angle for the liquid when surrounded by air.
im not sure how to start this problem.

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