Exam-style question
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What observation demonstrates that light can eject electrons from a metal surface in the photoelectric effect?.
Model answer
What a good answer should say
- When light of a certain frequency shines on a metal surface, electrons are emitted from the surface.
Explanation
Why this works
This answer is strong because it directly addresses the key observation of the photoelectric effect, which is the emission of electrons when light is incident on a metal. It tests the understanding of the fundamental concept of the photoelectric effect.
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