Exam-style question
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What is the relationship between photon energy and frequency?.
- A.Energy is directly proportional to frequency.
- B.Energy is inversely proportional to frequency.
- C.Energy is independent of frequency.
- D.Energy is proportional to the square of frequency.
Model answer
What a good answer should say
- Energy is directly proportional to frequency.
Explanation
Why this works
The energy of a photon is given by the equation E = hf, where E is energy, h is Planck's constant, and f is frequency. This shows that energy increases with frequency.
Common mistake
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