Young's Interference Condition
Constructive interference occurs for path difference?
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About This Question
- Subject
- physics
- Chapter
- optics
- Topic
- young's interference condition
- Difficulty
- Medium
- Year
- 2025
Solution
Correct Answer:
m λ
- Phase and Path Difference: For waves to interfere constructively, they must be 'in phase' when they overlap.
- Phase Matching: This occurs when their phase difference is 0,2π,4π,… or any 2mπ.
- Path Relation: A phase difference of 2π corresponds to a path difference of one full wavelength (λ).
- Result: For constructive interference (bright fringes), the path difference (Δ) must be an integer multiple of the wavelength.
- Formula: Δ=mλ, where m=0,1,2,….
This medium difficulty physics question is from the chapter optics, covering the topic of young's interference condition. It appeared in the 2025 exam.
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