Exam-style question
Try this first
Which of the following statements correctly describes the relationship between wavelength and momentum according to the de Broglie equation?.
- A.Wavelength is directly proportional to momentum.
- B.Wavelength is inversely proportional to momentum.
- C.Wavelength is independent of momentum.
- D.Wavelength equals momentum.
Model answer
What a good answer should say
- Wavelength is inversely proportional to momentum.
Explanation
Why this works
According to the de Broglie equation, λ = h / p, where λ is wavelength and p is momentum. This indicates that as momentum increases, wavelength decreases, showing an inverse relationship.
Common mistake
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