October 23, 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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