Two coherent monochromatic point sources S 1 and S 2 of wavelength 
= 600 nm are placed symmetrically on either side of the centre of the circle as shown. The sources are separated by a distance d = 1.8 mm. This arrangement produces interference fringes visible as alternate bright and dark spots on the circumference of the circle. The angular separation between two consecutive bright spots is 
. Which of the following options is/are correct?
Text Solution
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(b, c)
Path difference at point P
...(i)
At 
maxima
At 
maxima
For maxima at P, d 
or 
Angular fringe width, 
as 
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