I think you mean PHYSICS, not physic. There's an amazing difference between the two.
http://www.answers.com/physic
http://www.answers.com/physics
A laser beam in air is incident on a liquid at an angle of 40.0^\circ with respect to the normal. The laser beam's angle in the liquid is 25.0^\circ.What is the liquid's index of refraction?
1 answer