When a metal surface, in a photoelectric effect apparatus, is illuminated with monochromatic light at a wavelength 1 = 304.5 nm the stopping potential is found to be Von =1.87 V. 5. stop a. What is the work function, W , of the metal surface? b. If this photocathode is illuminated by light with a wavelength 1 = 475.0 nm , what is the maximum kinetic energy of the ejected photo-electrons, Kmax ? What is the critical wavelength, 1 , for this metal surface? Light with any wavelength longer C.
When a metal surface, in a photoelectric effect apparatus, is illuminated with monochromatic light at a wavelength 1 = 304.5 nm the stopping potential is found to be Von =1.87 V. 5. stop a. What is the work function, W , of the metal surface? b. If this photocathode is illuminated by light with a wavelength 1 = 475.0 nm , what is the maximum kinetic energy of the ejected photo-electrons, Kmax ? What is the critical wavelength, 1 , for this metal surface? Light with any wavelength longer C.
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Transcribed Image Text:When a metal surface, in a photoelectric effect apparatus, is illuminated with
monochromatic light at a wavelength i = 304.5 nm the stopping potential is found to be
Vtop =1.87 V.
a. What is the work function, W , of the metal surface?
b. If this photocathode is illuminated by light with a wavelength 2 = 475.0 nm , what is the
maximum kinetic energy of the ejected photo-electrons, Kmax ?
What is the critical wavelength, 1, for this metal surface? Light with any wavelength longer
than 1 cannot produce any photoelectrons.
C.
5.
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