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What are the conditions needed for sustained interference of light waves?

0 6 Views | Posted 3 months ago
Asked by Shiksha User

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    Answered by

    Pallavi Pathak | Contributor-Level 10

    3 months ago

    The following conditions are needed to observe sustained (stable) interference:

    • The two sources should have a constant phase difference, i.e; they should be coherent.
    • The light waves need to have almost the same frequencies.
    • The sources must emit waves with comparable amplitudes.
    • The path difference should be within the coherence length.

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