The focal length of a converging lens are fv and fr for violet and r – InterviewSolution

InterviewSolution

1.

The focal length of a converging lens are fv and fr for violet and red light respectively.(a) fv > fr(b) fv =fr.(c) fv, < fr(d) Any of the three is possible depending on the value of the average refractive index μ.

Answer»

The correct answer is

(c) f_v< f_r

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