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Q: 11.11 Light of wavelength is produced by an argon laser which is used in the photoelectric effect. When light from this spectral line is incident on the emitter, the stopping (cut-off) potential of photoelectrons is
. Find the work function of the material from which the emitter is made.
Answers (1)
The energy of incident photons is given by
Cut-off potential is 0.38 eV
Work function is therefore, 2.54-0.38= 2.16 eV
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