Question

The work function for copper is 4.5 eV.

(a) Find the threshold frequency and wavelength for the
photoelectric effect to occur when monochromatic electromagnetic
radiation is incident on the surface of a sample of copper.

Hz

nm

(b) Find the maximum kinetic energy of the electrons if the
wavelength of the incident light is 190 nm.

eV

(c) Find the maximum kinetic energy of the electrons if the
wavelength of the incident light is 240 nm.

eV

Answer #1

The work function for gold is 5.01 eV.
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wavelength
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frequency
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_________________V

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