MCQ
In a Young's double-slit experiment, the intensity at a point where the path difference is $\lambda/3$ ($\lambda$ being the wavelength of the light used) is I. If $I_0$ denotes the maximum intensity, then $I/I_0$ is equal to ______.
- A$3/4$
- B$\sqrt {3/2}$
- C$1/ \sqrt 2$
- ✓$1/4$