There is a large circle (not a screen this time) around two coherent sources S-1 and S_2 keptat a distance d = 3.4 lambda. (a) Find total number of maximas on this circle. (b) Four angular positions corresponding to third order maxima on this circle.

There is a large circle (not a screen this time) around two coherent

1.	There is a large circle (not a screen this time) around two coherent sources S-1 and S_2 keptat a distance d = 3.4 lambda. (a) Find total number of maximas on this circle. (b) Four angular positions corresponding to third order maxima on this circle.
Answer» SOLUTION :(a) Since, radius of circle `ltltd`, therefore we can APPLY `Deltax= d cos theta` CORRESPONDING to given figure `(Deltax)_min = 0` at `theta = 90^(@)` ` (Deltax)_max = d = 3.4lambda` at `theta =0^(@).` Corresponding to third order MAXIMA, At `P_(1`) ` Deltax = 3lambda ` or ` d cos theta = 3lambda ` or ` 3.4 cos theta = 3lambda` ` :. theta = (cos^-1)(3/3.4)` Four angular positions are as shown in figure.

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There is a large circle (not a screen this time) around two coherent sources S-1 and S_2 keptat a distance d = 3.4 lambda. (a) Find total number of maximas on this circle. (b) Four angular positions corresponding to third order maxima on this circle.

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