Q. Two sources give interference pattern which is observed on a screen, $D$ distance apart from the sources. The fringe width is $2\omega$. If the distance $D$ is now doubled, the fringe width will
A) Become $\omega/2$
B) Remain the same
C) Become $\omega$
D) Become $4\omega$
Explanation
(d) $\beta \propto D$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.