A low-power laser used in a physics lab might have a power of 0.30 mW and a beam diameter of 4.0 mm.
Part A. Calculate the average light intensity of the laser beam.
Express your answer using two significant figures.
Part B. Compare it to the intensity of a light bulb producing 100-W light viewed from 2.0 m .
Express your answer using two significant figures.
Answers: 3
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A low-power laser used in a physics lab might have a power of 0.30 mW and a beam diameter of 4.0 mm....
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