Changing the intensity of the incident light i. Would increasing the intensity of the incident light affect the energy of each incoming photon? (Assume that the light has the same wavelength as in the original experiment.) Explain. ii. Would increasing the intensity affect the current? Explain. (Hint: Consider any change in the number of electrons per second emitted.) iii. Sketch a curve on the graph below that would correspond to an experiment in which the intensity is greater than in the original experiment.
Changing the intensity of the incident light i. Would increasing the intensity of the incident light affect the energy of each incoming photon? (Assume that the light has the same wavelength as in the original experiment.) Explain. ii. Would increasing the intensity affect the current? Explain. (Hint: Consider any change in the number of electrons per second emitted.) iii. Sketch a curve on the graph below that would correspond to an experiment in which the intensity is greater than in the original experiment.
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The first part (a) is just for background info (if needed), I need help with part (b) i,ii,iii. Thank you!
Transcribed Image Text:1. Varying the Photoelectric Effect Apparatus
Below is an I-V graph for a photoelectric effect experiment in which a 175 nm light source and aluminum
electrodes (AL = 4.2 eV) were used.
I (arbitrary units)
Idealized I-V graph
for a photoelectric
effect experiment
-6.0 -4.5 -3.0 -1.5
27
-1
-21
1.5
3.0
V (volts)
4.5 6.0
a. Changing the wavelength of the incident light
i. Suppose that the wavelength of the incident light were decreased to 150 nm. Sketch and label a
curve on the graph that would correspond to this modified experiment. Your curve should clearly show
any changes to the stopping voltage and/or the maximum current.
ii. Suppose instead that the wavelength were increased to 400 nm. Sketch and label a curve on the
graph that would correspond to this modified experiment.
Transcribed Image Text:b. Changing the intensity of the incident light
i. Would increasing the intensity of the incident light affect the energy of each incoming photon?
(Assume that the light has the same wavelength as in the original experiment.) Explain.
ii. Would increasing the intensity affect the current? Explain. (Hint: Consider any change in the number
of electrons per second emitted.)
iii. Sketch a curve on the graph below that would correspond to an experiment in which the intensity is
greater than in the original experiment.
I (arbitrary units)
Idealized I-V graph
for a photoelectric
effect experiment
-6.0
-4.5 -3.0 -1.5
21
-1
-21
1.5
V (volts)
6.0
3.0 4.5
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