2 A mercury lamp radiates 5 W of energy uniformly in all directions in its blue spectral line (λ 435.8 nm) H.P. Mercury Spectral Lamp 100 80 60 (a) At what rate are blue photons generated in the lamp (in photons per second)? (b) Assuming the light is emitted uniformly in al40 directions, at what distance from the lamp will the rate of green photons flowing outward (the20 "intensity") be 10% photons.cm-2.s-1 (î.e. 1 million photons per square cm per second)? This is approximately the apparent brightness of a bright star. 800 600 Wavelength (nm) 400 500 700
2 A mercury lamp radiates 5 W of energy uniformly in all directions in its blue spectral line (λ 435.8 nm) H.P. Mercury Spectral Lamp 100 80 60 (a) At what rate are blue photons generated in the lamp (in photons per second)? (b) Assuming the light is emitted uniformly in al40 directions, at what distance from the lamp will the rate of green photons flowing outward (the20 "intensity") be 10% photons.cm-2.s-1 (î.e. 1 million photons per square cm per second)? This is approximately the apparent brightness of a bright star. 800 600 Wavelength (nm) 400 500 700
University Physics Volume 3
17th Edition
ISBN:9781938168185
Author:William Moebs, Jeff Sanny
Publisher:William Moebs, Jeff Sanny
Chapter6: Photons And Matter Waves
Section: Chapter Questions
Problem 136AP: (a) Calculate the number of photoelectrons per second that are ejected from a 1.00-mm2 area of...
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