Q. A point source of 3000 $lumen$ is located at the center of a cube of side length $2m$. The flux through one side is
A) 500 $lumen$
B) 600 $lumen$
C) 750 $lumen$
D) 1500 $lumen$
Explanation
(a) $\phi_{surface} = \frac{3000}{6} = 500\ lumen$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.