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Question 1: Photoelectric effect. An aluminum plate is lit by 30 watt blue light ( =...

Question 1: Photoelectric effect.
An aluminum plate is lit by 30 watt blue light ( = 340nm). The aluminum extraction work is 2 eV.
a. What will be the maximum speed of the ejected electrons?
b. If only 1% of the ejected electrons go to the detector, how much will it detect per second?
c. What is the stopping potential?
d. What maximum wavelength can the photoelectric effect produce on aluminum?
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