Deviation problems in ray optics in the light of the refined unambiguous definitions of angles of incidence,reflection and refraction

This paper makes use of the newly introduced refined unambiguous definitions of angle of incidence, angle of reflection and angle of refraction to give birth to novel vectorial treatment for the calculation of deviation of a ray of light in each of a few cases of ray optics. The problem of calculation of minimum deviation of a ray of light in passing through a prism has also been considered in the light of the refined unambiguous definitions of angle of incidence and angle of refraction. The use of vectorial treatment increases the range of applicability of vector algebra. Furthermore, incorporation of the refined unambiguous definitions of the aforesaid three angles in the novel treatment offered is much clearer leaving no room for confusion and it will enhance and sophisticate the optical field.