MCQ
Two coherent sources separated by distance d are radiating in phase having wavelength $\lambda$. 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${\sin ^{ - 1}}\frac{{n\lambda }}{d}$
- ✓${\cos ^{ - 1}}\frac{{4\lambda }}{d}$
- C${\tan ^{ - 1}}\frac{d}{{4\lambda }}$
- D${\cos ^{ - 1}}\frac{\lambda }{{4d}}$
