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What kind of sources are required for Young’s Double Slit experiment?

(a) Coherent

(b) Incoherent

(c) Intense

(d) Bright

This question was addressed to me during an interview.

I need to ask this question from Young’s Experiment topic in chapter Interference of Engineering Physics II

1 Answer

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Correct answer is (a) Coherent

To explain I would say: For the interference pattern to be visible, coherent sources are required. If the sources are coherent, only then would there be constructive interference.

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