An incoming ray of light has a vacuum wavelength of 589 nm.

a) If the light travels from flint glass (n = 1.66) to crown glass (n = 1.52) with an angle of incidence of 10.1 , find the angle of refraction. Answer in units of .

b) If the light travels from air to some medium with an angle of incidence of 12.3 and an angle of refraction of 10.0 , find the refractive index of the unknown medium.

) If the light travels from air to diamond (n = 2.419) at an angle of incidence of 52.5 , find the angle of refraction. Answer in units of .