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Vidya01 Vats
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Asked: 2025-01-10T09:08:10+00:00 In:

State the conditions which must be satisfied for two light sources to be coherent.

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(i) Two sources must emit light of same wavelength (or frequency).
(ii) Originating phase difference between two light sources must be either zero or having a constant value, which should not change with time.
Class 12 Physics Chapter 10 Wave Optics Session 2024-2025.

chapter 10 wave opticsclass 12 physicstwo light sources to be coherent
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    1 Answer

    1. For two light sources to be coherent, they must meet the following conditions:
      1. They must have a constant phase relationship, meaning the phase difference between them remains fixed over time.They must emit light of the same frequency (monochromatic light).
      2. They must have a constant amplitude ratio, ensuring uniform intensity over time for stable interference patterns.

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      https://www.tiwariacademy.com/ncert-solutions/class-12/physics/chapter-10/

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