Two coherent sources separated by distance d are radiating in phase having wavelength λ. A detector moves in a big circle around the two sources in the plane of the two sources. the angular position of n=4 interference maxima is given as
A
sin−1nλd
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B
cos−14λd
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C
tan−14λd
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D
cos−1λ4d
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Solution
The correct option is Bcos−14λd Path different at a point P on a circle is given by Δx=dcosθ→(i)