JEE Main & Advanced Physics Ray Optics Question Bank Refraction of Light at Plane Surfaces

  • question_answer
    When light travels from air to water and from water to glass, again from glass to \[C{{O}_{2}}\] gas and finally through air. The relation between their refractive indices will be given by

    A)            \[_{a}{{n}_{w}}\times {{\,}_{w}}{{n}_{gl}}\times {{\,}_{gl}}{{n}_{gas}}\times {{\,}_{gas}}{{n}_{a}}=1\]

    B)            \[_{a}{{n}_{w}}\times {{\,}_{w}}{{n}_{gl}}\times {{\,}_{gas}}{{n}_{gl}}\times {{\,}_{gl}}{{n}_{a}}=1\]

    C)            \[_{a}{{n}_{w}}\,\times {{\,}_{w}}{{n}_{gl}}\,\times {{\,}_{gl}}{{n}_{gas}}=1\]

    D)            There is no such relation

    Correct Answer: A

    Solution :

               \[_{a}{{n}_{w}}\times {{\,}_{w}}{{n}_{gl}}\times {{\,}_{gl}}{{n}_{gas}}\times {{\,}_{gas}}{{n}_{a}}\]\[=\frac{{{n}_{w}}}{{{n}_{a}}}\times \frac{{{n}_{gl}}}{{{n}_{w}}}\times \frac{{{n}_{gas}}}{{{n}_{gl}}}\times \frac{{{n}_{a}}}{{{n}_{gas}}}=1\]


You need to login to perform this action.
You will be redirected in 3 sec spinner