posted by Anonymous .
The light beam shown in the figure on the right
makes an angle of 20.0° with the normal line NN’ in
the linseed oil. Determine the angles θ and θ’. (Note:
The index of refraction of linseed oil is 1.48.)
sinθ/sinθ' = 1.48
sinθ' = sin20°/1.48 = 0.231
θ = 13.36°
Best I can do with no diagram.