Laser beam intensity · PhysicsBowl 2019 #26

Physics · optics

Problem

A 15.0-mW laser emits a beam that is 2.00 mm in diameter. What is the intensity of this beam? (A) 1.19 x 10³ W/m² (B) 1.19 x 10⁴ W/m² (C) 3.59 x 10⁴ W/m² (D) 4.77 x 10⁴ W/m² (E) 2.98 x 10⁵ W/m²

Related theory

Browse the problem library