Physics · Dual Nature of Radiation and Matter
The work function (W0) values for a few metals are listed below: Li: 2.42 eV, Na: 2.30 eV, K: 2.25 eV, Mg: 3.70 eV, Cu: 4.80 eV, Ag: 4.30 eV. Find the number of metals that will exhibit the photoelectric effect when light of wavelength 400 nm falls on them. (Given: h = 6.6 × 10-34 J s, c = 3 × 108 m/s, e = 1.6 × 10-19 C)
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