The Photoelectric Effect

Thursday, 18 October 2018

12:02 AM

Untitled picture.png Machine generated alternative text:
Light with a wavelength 588 nm illuminates a surface. The work function of the surface is 1.30 electron volts.
a) What is the frequency of light hitting the surface?
5.10e14
You need to use v = th to convert trom a wavelength to a frequency.
What is the maximum kinetic energy of an electron ejected from the surface?
1.30+19
What is the magnitude ot the minimum backing voltage that would need to be applied (between this surface and the anode) to stop all the electrons released from this surface from reaching
the anode?
IAVI= .81

Untitled picture.png Machine generated alternative text:
You complete the experiment as outlined in pan 2 of the photoelectric effect experiment in the lab manual. You choose to plot a grapn with the maximum kinetic energy (in joules) otthe
electrons on the y axis and the frequency (in hertz) on the x axis. The equation for the line you plot is:
y = 4.26E-34 x - 3.28E-19
a) Using the results from this grapn what is the value tor Planck's constant?
n= 4.26e-34
Js
5) What is the value for the work function in electron volts?
2.05
Ink Drawings
Ink Drawings
Ink Drawings
Ink Drawings
Ink Drawings
Ink Drawings

Untitled picture.png Machine generated alternative text:
You complete the experiment as outlined in pan 2 of the photoelectric effect experiment in the lab manual. You choose to plot a grapn with the maximum kinetic energy (in joules) otthe
electrons on the y axis and the frequency (in hertz) on the x axis. The equation for the line you plot is:
y = 4.26E-34 x - 3.28E-19
a) Using the results from this grapn what is the value tor Planck's constant?
n= 4.26e-34
Js
5) What is the value for the work function in electron volts?
2.05

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