inderbir10

Find the angle of refraction for a beam of light going from air (n=1) to glass (n=1.5) at an angle of 30 degrees and the surface of the glass is flat. Find the critical angle for the glass/air interface. Which direction does the light have a critical angle, glass-air, air-glass, or both? Why?

A beam of light enters from air to glass. If the speed of light in air is 3 x 10^8 m/s and in glass is 2 x 10^8 m/s, calculate the refractive index of glass with respect to air.