Q. Two waves originating from source $S_{1}\ and\ S_{2}$ having zero phase difference and common wavelength $\lambda$ will show complete destructive interference at a point P, is $\left( S_{1}P - S_{2}P \right) =$
A) $5\lambda$
B) $\frac{3\lambda}{4}$
C) $\frac{4\lambda}{2}$
D) $\frac{11\lambda}{2}$
Explanation
(d) $S_{1}P - S_{2}P = 11(\lambda/2) =$add integral multiple of $\lambda/2$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.