Two coherent sources separated by distance\[d\]are radiating in phase having wavelengthl. 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

\[{{\tan }^{-1}}\frac{d}{4\lambda }\]

\[{{\sin }^{-1}}\frac{n\lambda }{d}\]

\[{{\cos }^{-1}}\frac{4\lambda }{d}\]

\[{{\cos }^{-1}}\frac{\lambda }{4d}\]

Two coherent sources separated by distance\[d\]are radiating in phase

1.	Two coherent sources separated by distance\[d\]are radiating in phase having wavelengthl. 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.	\[{{\sin }^{-1}}\frac{n\lambda }{d}\]
B.	\[{{\cos }^{-1}}\frac{4\lambda }{d}\]
C.	\[{{\tan }^{-1}}\frac{d}{4\lambda }\]
D.	\[{{\cos }^{-1}}\frac{\lambda }{4d}\]
Answer» C. \[{{\tan }^{-1}}\frac{d}{4\lambda }\]