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) $\sin ^{-1} \frac{n \lambda}{d}$
- B(b) $\cos ^{-1} \frac{4 \lambda}{d}$
- C(c) $\tan ^{-1} \frac{d}{4 \lambda}$
- D(d) $\cos ^{-1} \frac{\lambda}{4 d}$
