Question

In Young's double slit experiment, the two equally bright slits are coherent, but of phase difference $\frac{\pi }{3}$ .If maximum intensity on the screen is$I_0$, the intensity at the point on the screen equidistant from the slits is____?

• A. $I_0$
• B. $\frac{I_0}{2}$
• C. $\frac{I_0}{4}$
• D. $\frac{3I_0}{4}$

Answer 1

The correct option is D $\frac{3I_0}{4}$

$[I=I_{o}si{n}^2\theta ]$

$=I_o{\left(\frac{\sqrt{3}}{2}\right)}^2$

$=\frac{3I_o}{4}$