Let the x–z plane be the boundary between two transparent media. Medium 1 in z ≥ 0 has a refractive index of √2 and medium 2 with z < 0 has a refractive index of √3 . A ray of light in medium 1 given by the vector 
is incident on the plane of separation. The angle of refraction in medium 2 is
(a) 30°
(b) 45°
(c) 60°
(d) 75°
