A sodium metal piece is illuminated with light of wavelength 0.3 μm. The work function of sodium is 2.46 eV. For this sifuation, mark out the correct statement(s).

Kmax=hv−ϕ=6.63×10−34×3×1080.3×10−6×1.6×10−19−2.46eV=1.68eV Cut-off wavelength, λ0=hcϕ=505nmThe minimum energy required to eject the photo-electrons is equal to work function.