Two mediums A and B have refractive indices 3 and 4 respectively. In which medium light will travel faster?
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It is to be noted that refractive index of a medium is directly proportional to angle of deviation i.e. if a medium is optically denser then the light will bend more towards the normal.

if μ1>μ2 then r2>r1 as for μ1 light will bend more towards the normal.
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