Exam-style question
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If the frequency of light is doubled in the photoelectric effect, what happens to the energy of the emitted electrons?.
- A.It doubles
- B.It halves
- C.It quadruples
- D.It remains the same
Model answer
What a good answer should say
- It doubles
Explanation
Why this works
According to the equation E = hf, if the frequency (f) is doubled, the energy (E) of the emitted electrons also doubles, since energy is directly proportional to frequency.
Common mistake
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