JEE Main 2020 Physics question

A beam of electromagnetic radiation of intensity W/ is comprised of wavelength, = 310 nm. It falls normally on a metal (work function = 2eV) of surface area of 1 . If one in photons ejects an electron, total number of electrons ejected in 1 s is . (hc = 1240 eVnm, 1eV = J), then x is …………....... .