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The wavelength of light in the visible r...

The wavelength of light in the visible region is about 390nm for violet color, about 550nm (average wavelength) for yellow green colour and about 760nm for red color. What are the energies of photon in eV at the (i) violet end (ii) average wavelength yellow-green color and (iii) red end of the visible spectrum? `("Take " h=6.63xx10^(-34)Js and 1eV=1.6xx10^(-19)Js)`

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The correct Answer is:
(i) 3.19 eV , (ii) `2.26 eV` , (iii) 1.64 eV
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