Physics · Wave Optics
Two light waves having the same wavelength λ in vacuum are initially in phase. Then the first wave travels a path length L1 through a medium of refractive index n1, while the second wave travels a path length L2 through a medium of refractive index n2. After this, the phase difference between the two waves is:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 12πλn1n2 (L1 - L2)
- 2πλ (n1L1 - n2L2)
- 32πλ (L1 - L2)
- 42πλ (n1L1 - n2L2)✓
Correct answer
2πλ (n1L1 - n2L2)
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