Q. Total flux produced by a source of 1 $cd$ is
A) $1/4\pi$
B) $8\pi$
C) $4\pi$
D) $1/8\pi$
Explanation
(c) Luminous intensity $L = \frac{\phi}{4\pi} \Rightarrow 1 = \frac{\phi}{4\pi} \Rightarrow \phi = 4\pi$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.