question_answer

In Fig. path of a parallel beam of light passing through a convex lens of refractive index j\[{{\mu }_{g}}\]kept in a medium of refractive index\[{{\mu }_{m}}\] is shown. \[Is\] (i) \[{{\mu }_{g}}={{\mu }_{w}}\] or (ii) \[{{\mu }_{g}}>{{\mu }_{w}}\]or (iii) \[{{\mu }_{g}}<{{\mu }_{w}}\]?         

Answer:

                \[{{\mu }_{g}}={{\mu }_{w}}\]