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while conducting a photoelectric experiment with light of a certain frequency, you find that a reverse potential of 1.25v is required to reduce the current

while conducting a photoelectric experiment with light of a certain frequency, you find that a reverse potential of 1.25v is required to reduce the current to zero, find a) the maximum kinetic energy of the emitted photoelectrons in ev and b) the maximum speed of the emitted photoelectrons in m/s

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