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A and B are two identical coherent sources emitting light of wavelength λ. The sources are initally in phase. Intensity ar P is half of the maximum intensity. If distance of the point P from A is D, the minimum seperation between the sources A and B, ‘d’ must be equal to?

A and B are two identical coherent sources emitting light of wavelength λ. The sources are initally in phase. Intensity ar P is half of the maximum intensity. If distance of the point P from A is D, the minimum seperation between the sources A and B, ‘d’ must be equal to?

Grade:12

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