A light ray enters a solid glass sphere of refractive index μ=√ 3 at an angle of incidence 60°. The ray is both reflected and refracted at the…

A light ray enters a solid glass sphere of refractive index $\displaystyle \mu=\sqrt{3}$ at an angle of incidence $\displaystyle 60$°. The ray is both reflected and refracted at the farther surface of the sphere. The angle (in degrees) between the reflected and refracted rays at this surface is \_\_\_\_.