Exam-style question
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In Young's double-slit experiment, what happens to the fringe spacing if the distance between the slits is decreased?.
- A.Fringe spacing increases
- B.Fringe spacing decreases
- C.Fringe spacing remains the same
- D.Fringe spacing becomes unpredictable
Model answer
What a good answer should say
- Fringe spacing increases
Explanation
Why this works
Decreasing the distance between the slits increases the fringe spacing because the angle of diffraction increases, leading to wider separation of the interference pattern.
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