A radiation detector exposed to sunlight records the energy falling on a given area each unit time. If such a detector has a reading of $0\mathrm{.}698calc{m}^{-2}mi{n}^{-1},$ how many photons of sunlight are striking each $c{m}^2$ in one minute? Assume the average wavelength of sunlight is $460.nm.$ calorie$)$

A$)1\mathrm{.}62{10}^{18}$ photons

B$)4\mathrm{.}32{10}^{19}$ photons

C$)6\mathrm{.}761018$ photons

D$)2\mathrm{.}31{10}^{18}$ photons

E$)9\mathrm{.}63{10}^{19}$ photons

Answer: C

Diff: $2$ Type: $MC$

Reference: Section $8-2$