Monochromatic light of wavelength \(3000\overset {\circ}{A}\) is incident on a surface area \(4\ cm^{2}\). If intensity of light is \(150\ mW/m^{2}\), then rate at which photons strike the target is
1
\(3\times 10^{10}/s\)
2
\(9\times 10^{13}/s\)
3
\(7\times 10^{15}/s\)
4
\(6\times 10^{19}/s\)