Exam-style question
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In a double-slit experiment, what is the relationship between fringe spacing and wavelength?.
- A.Fringe spacing is inversely proportional to wavelength.
- B.Fringe spacing is directly proportional to wavelength.
- C.Fringe spacing is independent of wavelength.
- D.Fringe spacing is proportional to the square of the wavelength.
Model answer
What a good answer should say
- Fringe spacing is directly proportional to wavelength.
Explanation
Why this works
In a double-slit experiment, the fringe spacing increases with increasing wavelength, as longer wavelengths produce wider spacing between the interference fringes.
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