Light of wavelength 500 nm is incident on a metal with work function 2.28 eV. The de Broglie wavelength of the emitted electron is
≤ 2.8 × 10–12 m
< 2.8 × 10–10 m
< 2.8 × 10–9 m
≥ 2.8 × 10–9 m
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