Exam question - answer in full for 6 marks
When monochromatic light is incident on a
metal plate, electrons are emitted only when the frequency of light exceeds a
certain frequency.
Explain in terms of energy, why this threshold frequency exists and why a photon theory of light provides a better explanation of the photoelectric effect than a wave theory of light.
The quality of your written answer will be assessed in this question.
Explain in terms of energy, why this threshold frequency exists and why a photon theory of light provides a better explanation of the photoelectric effect than a wave theory of light.
The quality of your written answer will be assessed in this question.
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