Calculate energy in terms of blue light of wavelength 450 nm.

Explanation

Energy of Avogadro.s number of quanta, Einstein `=(N_(A)hc)/(lambda)`
`=(6.022xx10^(23) "mol"^(-1) xx 6.626xx10^(-34)Js xx 3.0 xx 10^(8)ms^(-1))/(450xx10^(-9)m)=2.66xx10^(5)J`