Light from a medium with index of refraction n1=2.49 passes into a medium with index of refraction n2=1.10. What is the critical angle where incoming light would all reflect off of the boundary, without passing into the second medium? Answer in degrees, °, measured from the normal.

A ray of light travels through air until it strikes the interface between the air and another medium. The incident ray makes an angle of  ?1 = 34.0°  with the normal, as shown in the figure below. Upon passage into the second medium, the ray is refracted, emerging from the interface at an angle  ?2  with respect to the normal. A light ray in air is moving down and to the right and is incident on a second medium. It makes an angle ?1 with the vertical. Inside the vertical, it continues to move down and to the right but at a steeper slope than the incident ray. It makes an angle ?2 with the vertical. (a) Suppose that the second medium is flint glass. What is the angle of refraction,  ?2  (in degrees)? (Enter your answer to at least one decimal place.)  ° (b) Suppose that the second medium is fused quartz. What is the angle of refraction,  ?2,  in this case (in degrees)? (Enter your answer to at least one decimal place.)  ° (c) Finally, suppose that the second medium is ethyl…

A block of glass has an index of refraction equal to n_g=1.68. The glass is surrounded by oil which has an index of refraction of n_o=1.28. What is the largest incident angle (deg) possible in the glass before the ray undergoes total internal reflection?

A light propagates in Material 1 with index of refraction n1 = 1.13, strikes an interface, then passes into Material 2 with an index of refraction n2 = 1.41. The angle of incidence at the interface is 27.5. Determine the angle of refraction