Q 1634734652.     The value of Planck's constant is `6.63\times 10^{-34}Js`. The speed of light `3\times 10^{17}\:nm\:s^{-1}`. Which value is closest to the wavelength in nanometer of a quantum of light with frequency of `6\times 10^{15}s^ {-1}`?

AIPMT 2013
A

`10`

B

`25`

C

`50`

D

`75`

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