Please help thank you! Required info: Under favorable conditions, the human eye can detect light waves with intensities as low as 2.50 x10^-12 W/m2. a) At this intensity, what is the average power incident on a pupil of diameter 8.20 mm? b) if this light is produced by an isotropic source 15.7 m away, what is the average power emitted by the source?

Please help thank you! Required info: Under favorable conditions, the human eye can detect light waves with intensities as low as 2.50 x10^-12 W/m2. a) At this intensity, what is the average power incident on a pupil of diameter 8.20 mm? b) if this light is produced by an isotropic source 15.7 m away, what is the average power emitted by the source?

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter7: Work, Energy, And Energy Resources

Section: Chapter Questions

Problem 31PE: Suppose a star 1000 times brighter than our Sun (that is, emitting 1000 times the power) suddenly...

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