A 0.60 mW laser produces a beam of light with a diameter of 2.0 mm ....
A 0.60 mW laser produces a beam of light with a diameter of 2.0 mm .
1.What is the average intensity of this beam? Iav = ___kW/m2
2.At what distance does a 160 W lightbulb have the same average intensity as that found for the laser beam in part (a)? (Assume that 5.0% of the bulb's power is converted to light.) r=___cm
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A 0.60 mW laser produces a beam of light with a diameter of 1.7 mm ....
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