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Mixture of Colours

why are coher...

Question

Why are coherent sources required to produce the interference of light?

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Solution

Two sources of emitting light waves of same frequency or wavelength and of a stable phase difference are required to see interference pattern and we can obtain such nature of light waves from coherent source. So, we require coherent sources to produce the interference of light.

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What are the coherent sources of light and why do we need coherent sources for the production of interference pattern ?

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