Exam-style question
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What is the significance of the dark fringes observed in Young's double-slit experiment?.
- A.They indicate areas of constructive interference
- B.They indicate areas of destructive interference
- C.They show the presence of photons
- D.They are irrelevant to the experiment
Model answer
What a good answer should say
- They indicate areas of destructive interference
Explanation
Why this works
Dark fringes occur where the light waves from the two slits cancel each other out, demonstrating the principle of destructive interference.
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