Two identical coherent sources are placed on a diameter of a circle of radius R at separation x `(lt lt R)` symmetrical about the center of the circle. The sources emit identical wavelength `lambda` each. The number of points on the circle of maximum intensity is `(x = 5 lambda)`A. 20B. 22C. 24D. 26

Two identical coherent sources are placed on a diameter of a circle of

1.	Two identical coherent sources are placed on a diameter of a circle of radius R at separation x `(lt lt R)` symmetrical about the center of the circle. The sources emit identical wavelength `lambda` each. The number of points on the circle of maximum intensity is `(x = 5 lambda)`A. 20B. 22C. 24D. 26
Answer» Correct Answer - A Path diff at P is , `Delta = 2(x//2 cos theta) = x cos theta` For intensity to be maximum `Delta x = n lambda , x cos theta = n lambda` `(n lambda)/(x) gt 1 , x = 5 lambda , n= 1,2,3,4,5` Therefore in all for quadrants these can be 20 maximum

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