In order for the human eye to detect visible light, its optic nerves

must be exposed to a minimum energy of $2\mathrm{.}01017$ J$.($a$)$

Calculate the number of photons of red light needed to achieve this $($ $=$

$700$ nm$).($b$)$ Without any additional calculations, determine if you would

need more or fewer photons of blue light to excite the optical nerves.