Exam-style question
Try this first
How does the photoelectric effect demonstrate wave-particle duality?.
- A.It shows that light can only behave as a wave.
- B.It demonstrates that light can behave as a particle under certain conditions.
- C.It proves that light has no mass.
- D.It indicates that light cannot be absorbed by electrons.
Model answer
What a good answer should say
- It demonstrates that light can behave as a particle under certain conditions.
Explanation
Why this works
The photoelectric effect shows that light can eject electrons from a material, which supports the particle theory of light, as energy is delivered in discrete packets called photons.
Common mistake
No common mistake is linked to this question yet.