A 0.60 mW laser produces a beam of light with a diameter of 1.7 mm ....
A 0.60 mW laser produces a beam of light with a diameter of 1.7 mm .
the average intensity of this beam
|
0.26 |
kW/m2 |
At what distance does a 130 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.)Express your answer using two significant figures.
r=__________cm
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A 0.60 mW laser produces a beam of light with a diameter of 1.7
mm ....
A 0.60 mW laser produces a beam of light with a diameter of 2.0 mm ....
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