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10.1 The apparatus illustrated in the simplified diagram below is used to demonstrate the photoelectric effect.
10.1.1 Define the term photoelectric effect. (2)
Incident light of frequency 1,2 x 1015 Hz is shone onto the metal plate and electrons are emitted.
Calculate the:
10.1.2 Number of photoelectrons emitted in one second if the total
energy transferred by the light to the metal plate per second is 1,75 x 10-9 J (4)
10.1.3 Maximum speed of a photoelectron if the threshold frequency of
the metal plate is 9,09 x 1014 Hz (5)
10.2 Briefly explain how an emission spectrum is formed in terms of energy
transitions. (2)
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TOTAL: 150