Light with an average flux of \(20 \Omega / \mathrm{cm}^{2}\) falls on a non-reflecting surface at normal incidence having surface area \(20 \mathrm{~cm}^{2}\). The energy received by the surface during time span of \(1 \mathrm{minute}\) is :
A \(10 \times 10^{3} \mathrm{~J}\)
в \(12 \times 10^{3} \mathrm{~J}\)
(c) \(24 \times 10^{3} \mathrm{~J}\)
D \(48 \times 10^{3} \mathrm{~J}\)