Page 1 - HA-refraction through glass slab
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Objective Questions:


               1. A ray of light is travelling in a direction perpendicular to the boundary
               of a parallel glass slab. The ray of light:
               (a) Is refracted towards the normal


               (b) Is refracted away from the normal

               (c) Is reflected along the same path


               (d) Does not get refracted


               Subjective Questions:


                    1.  In an experiment with a glass slab, a student observed that a
                        ray of light incident at an angle of 55 ͦ with the normal on one
                        face of the slab, after refraction, strikes the opposite face of the
                        slab before emerging out in air making an angle of 40 ͦ with the
                        normal. Draw a labelled diagram to show the path of this ray.
                        What would be the value of angle of refraction and angle of
                        emergence?
                    2.  What is lateral displacement of light in glass slab?
                    3.  How does lateral displacement depend on thickness of glass slab?
                    4.  How does lateral shift vary with refractive index?
                    5.  Under what condition the angle of refraction will be equal to the angle of
                        incidence?
                    6.  Is lateral displacement directly proportional to thickness?
                    7.  Is angle of incidence equal to angle of refraction in a glass slab?
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