Answer to Question #279271 in Atomic and Nuclear Physics for BIGIRIMANA Elie

Question #279271

While conducting a photoelectric-effect experiment with light of a certain

frequency, you find that a reverse potential difference of 1.25 V is required

to reduce the current to zero. Find (a) the maximum kinetic energy and (b)

the maximum speed of the emitted photoelectrons.


1
Expert's answer
2021-12-16T11:35:02-0500

(a) KE=eV=1.25 eV.KE=eV=1.25\text{ eV}.

(b) v=2KE/m=663.1 km/s.v=\sqrt{2KE/m}=663.1\text{ km/s}.


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