Q. When a thin transparent plate of thickness $t$ and refractive index $\mu$ is placed in the path of one of the two interfering waves of light, then the path difference changes by
A) $(\mu + 1)t$
B) $(\mu - 1)t$
C) $\frac{(\mu + 1)}{t}$
D) $\frac{(\mu - 1)}{t}$
Explanation
The correct answer is Option B: $(\mu - 1)t$.
A detailed explanation for this question is being prepared.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.