Q. The coherent formula for fringe visibility is
A) $V = \frac{I_{\max} - I_{\min}}{I_{\max} + I_{\min}\ }$
B) $V = \frac{I_{\max} + I_{\min}}{I_{\max} - I_{\min}\ }$
C) $V = \frac{I_{\max}}{I_{\min}}$
D) $V = \frac{I_{\min}}{I_{\max}\ }$
Explanation
(a) Fringe visibility ($V$) is given by $V = \frac{I_{\max} - I_{\min}}{{I_{\max} + I}_{\min}}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.