AP Physics 2mediummcq1 pt
The photoelectric effect demonstrates that light behaves as:
A.Neither a wave nor a particle
B.A wave only
C.A particle only
D.Both a wave and a particle
Explanation
Core Concept
The photoelectric effect demonstrates the particle nature of light—photons with energy E = hf eject electrons only when their frequency exceeds a threshold, regardless of intensity.
Correct Answer
CA particle only
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