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# Red drop occurs in wave length of

$\begin{array}{1 1}(A)\;\text{492nm}\\(B)\;\text{535nm}\\(C)\;\text{586nm}\\(D)\;\text{680nm}\end{array}$

Can you answer this question?

Red drop occurs in wave length of 680nm
Hence (D) is the correct answer.
answered Apr 7, 2014