(II) A low-power laser used in a physics lab might have
Chapter , Problem 56(choose chapter or problem)
(II) A low-power laser used in a physics lab might have apower of 0.50 mW and a beam diameter of 3.0 mm.Calculate (a) the average light intensity of the laser beam,and (b) compare it to the intensity of a lightbulb emitting15 W of light viewed from a distance of 2.0 m.
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