Solved: Light emerges from a 5.0-mW laser in a beam 1.0 mm in diameter. The beam shines
Chapter 14, Problem 52(choose chapter or problem)
Light emerges from a 5.0-mW laser in a beam 1.0 mm in diameter. The beam shines on a wall, producing a spot 3.6 cm in diameter. What is the beams intensity (a) at the laser and (b) at the wall?
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