Question
Asked Dec 17, 2019
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4. Problem. When monochromatic light with a wavelength of
310 nm falls on a surface, the stopping potential necessary
to stop emission of photoelectrons is 1.7 V. What is the work
function for this surface?
= 2.3 eV.
Answer:
%3D
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4. Problem. When monochromatic light with a wavelength of 310 nm falls on a surface, the stopping potential necessary to stop emission of photoelectrons is 1.7 V. What is the work function for this surface? = 2.3 eV. Answer: %3D

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Expert Answer

Step 1

According to the photoelectric effect, the work function for the metal surface is,

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hf = 0+eVstqp hc - = +eV¸ stop hc eV stop

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Step 2

Substitute the ...

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(4.136x10eV-s)(3.0×10°m/s) (10 m Ø = -1.7eV (310nm 1nm = 4.00eV–1.7eV = 2.3 eV

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Electrostatic Potential and Capacitance

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