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Physics — Question 26

QCAA 2020, Paper 1 · 3 marks

Q26 · 2020 · Paper 1Simple familiar3 marks

QUESTION 26 (3 marks)

A photoelectric effect experiment was conducted by shining different frequencies of light on a plate made of an unknown metal. The graph shows the kinetic energies of ejected photoelectrons with respect to the frequency of incident light.
The table shows the work functions of various metals.
Determine which metal is most likely to have ejected the photoelectrons in this experiment.
Graph of photoelectron kinetic energy versus incident frequency.
Graph of photoelectron kinetic energy versus incident frequency.
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