Question

2 coherent sources S1and S2 vibrating in phase emit light of wavelength W.The separation between them is2W . Consider the screen to be perpendicular to plane of sources. and the distance between the screen and source is D . (D>>>W).Then find the distance of 1st bright fringe from the line of 2 sources. 1) √2D. 2)1.5D. 3)√3D. 4)2D​

Answer 1

Answer:

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Explanation: