A Radiation Detector Exposed to Sunlight Records the Energy Falling

Multiple Choice

A radiation detector exposed to sunlight records the energy falling on a given area per unit time.If such a detector has a reading of 0.430 cal cm^-2 min^-1,how many photons of sunlight are striking each cm² in one minute? Assume the average wavelength of sunlight is 460.nm.(4.184 J = 1 calorie)

A) 2.02 × 10⁷ photons
B) 8.46 × 10⁷ photons
C) 4.17 × 10¹⁸ photons
D) 1.02 × 10²⁷ photons
E) 4.25 × 10²⁷ photons