Exam-style question
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How does increasing the intensity of light affect the photoelectric effect?.
- A.Increases the energy of emitted electrons.
- B.Increases the number of emitted electrons.
- C.Decreases the threshold frequency.
- D.Has no effect on the photoelectric effect.
Model answer
What a good answer should say
- Increases the number of emitted electrons.
Explanation
Why this works
Increasing the intensity of light increases the number of photons hitting the metal surface. This leads to more electrons being emitted, as long as the frequency is above the threshold frequency, illustrating how photon quantity affects the photoelectric effect.
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