Q. Photo cell is a device to
A) Store photons
B) Measure light intensity
C) Convert photon energy into mechanical energy
D) Store electrical energy for replacing storage batteries
Explanation
(b) Number of electrons can be measured which are directly proportional to the intensity of radiation
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.