Q. If $L$ is the coherence length and $c$ the velocity of light, the coherent time is
A) $cL$
B) $\frac{L}{c}$
C) $\frac{c}{L}$
D) $\frac{1}{Lc}$
Explanation
(b) Coherent time $= \frac{Coherence\ length}{Velocity\ of\ light} = \frac{L}{c}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.