Categories > Dual Nature of Radiation and Matter > Photon and Photoelectric Effect > The work function of a metal is $1.6 \times {10^{ - 19}}$J. When the metal surface is illuminated by the light of wavelength 6400 Å, then the maximum kinetic energy of emitted photo-electrons will be (Planck's constant $h = 6.4 \times {10^{ - 34}}Js$)

Dual Nature of Radiation and Matter

Question: The work function of a metal is $1.6 \times {10^{ - 19}}$J. When the metal surface is illuminated by the light of wavelength 6400 Å, then the maximum kinetic energy of emitted photo-electrons will be (Planck's constant $h = 6.4 \times {10^{ - 34}}Js$)


1) $14 \times {10^{ - 19}}\;J$
2) $2.8 \times {10^{ - 19}}\;J$
3) $1.4 \times {10^{ - 19}}J$
4) $1.4 \times {10^{ - 19}}\,eV$
Solution: Explanation: No Explanation
Photon and Photoelectric Effect

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