Q. In Young’s double slit experiment, the phase difference between the light waves reaching third bright fringe from the central fringe will be $(\lambda = 6000\mathring{\mathrm{A}})$
A) Zero
B) $2\pi$
C) $4\pi$
D) $6\pi$
Explanation
(d) $\because n = 3,\ \therefore 2n\pi = 2 \times 3\pi = 6\pi$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.