Exam-style question
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Explain how path difference and phase difference relate to the formation of maxima and minima in an interference pattern.
Model answer
What a good answer should say
- Maxima occur when the path difference between two waves is an integer multiple of the wavelength, resulting in constructive interference.
- Minima occur when the path difference is a half-integer multiple of the wavelength, leading to destructive interference.
Explanation
Why this works
This answer effectively connects path difference and phase difference to the resulting interference pattern, demonstrating a clear understanding of the underlying principles. The question assesses the ability to apply theoretical concepts to practical scenarios in wave interference.
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