The
X−Y plane be taken as the boundary between two transparent media
M1 and
M2⋅M1 in
Z≥0 has a refractive index of
√2 and
M2 with
Z<0 has a refractive index of
√3. A ray of light travelling in
M1 along the direction given by the vector
=4√3−3√3−5, is incident on the plane of separation. The value of difference between the angle of incident in
M1 and the angle of refraction in
M2 will be____ degree.