A laser emits a narrow beam of light. The radius of the beam is 9.1 mm, and the power is 2.2 mW. What is the intensity o
Posted: Tue Apr 26, 2022 7:43 pm
A laser emits a narrow beam of light. The radius of the beam is 9.1 mm, and the power is 2.2 mW. What is the intensity of the laser beam?