Question

Two coherent point sources $S_1$ and $S_2$ are separated by a small distance $d$ as shown in the figure. The fringes obtained on the screen will be

• A. Staright lines
• B. Semi-circles
• C. Prints
• D. Concentric circles

Answer 1

The correct option is D Concentric circles

The point source emits a spherical wavefront. Hence, after interference, concentric circles will be formed on the screen.

Hence, option $\left(\text{D}\right)$ is correct.