Solve que 37:

37. The x-y plane is the boundary between two transparent media. Medium -1 with z>0 has refractive index $\sqrt{2}$ and medium -2 with Z<0 has a refractive index $\sqrt{3}$. A ray of light in medium -1 given by the vector $\mathrm{A}=6\sqrt{3}\hat{\mathrm{i}}+8\sqrt{3}\hat{\mathrm{j}}-10\hat{\mathrm{k}}$ is incident on the plane of separation. Find the unit vector in the direction on refracted ray in medium -2.