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QUESTION
What is the frequency in hertz of blue light having a wavelength of 425 nm?
##7,0588xx10^(14)Hz##
Using the equation for the speed of a light wave, and knowing its speed in air, we get :
##c=flambda##
##thereforef=c/lambda=(3xx10^8m//s)/(425xx10^(-9)m)=7,0588xx10^(14)Hz##
