Exam-style question
Try this first
In a double-slit experiment, what is the relationship between path difference and fringe spacing?.
- A.Fringe spacing is directly proportional to path difference.
- B.Fringe spacing is inversely proportional to path difference.
- C.Fringe spacing is independent of path difference.
- D.Fringe spacing is equal to path difference.
Model answer
What a good answer should say
- Fringe spacing is directly proportional to path difference.
Explanation
Why this works
In a double-slit experiment, the fringe spacing is determined by the path difference between the two waves arriving at a point on the screen, leading to constructive or destructive interference.
Common mistake
No common mistake is linked to this question yet.