Physics · Wave Optics
The phase difference (Φ) and path difference (δ) are related as:
- 1Φ = (λ / 2π) δ
- 2Φ = (π / 2λ) δ
- 3Φ = (2λ / π) δ
- 4Φ = (2π / λ) δ✓
Correct answer
Φ = (2π / λ) δ
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