A sodium lamp emits light at the power P = 100 W and at the wavelength = 593 nm, and the emission is uniformly in all directions. (a) At what rate are photons emitted by the lamp? (b) At what distance from the lamp will a totally absorbing screen absorb photons at the rate of 1.00 photon /cm²s? (c) What is the rate per square meter at which photons are intercepted by a screen at a distance of 2.40 m from the lamp?

A sodium lamp emits light at the power P = 100 W and at the wavelength = 593 nm, and the emission is uniformly in all directions. (a) At what rate are photons emitted by the lamp? (b) At what distance from the lamp will a totally absorbing screen absorb photons at the rate of 1.00 photon /cm²s? (c) What is the rate per square meter at which photons are intercepted by a screen at a distance of 2.40 m from the lamp?

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Question

A sodium lamp emits light at the power P = 100 W and at the wavelength = 593 nm, and the emission is uniformly in all directions. (a)
At what rate are photons emitted by the lamp? (b) At what distance from the lamp will a totally absorbing screen absorb photons at the
rate of 1.00 photon /cm²s? (c) What is the rate per square meter at which photons are intercepted by a screen at a distance of 2.40 m
from the lamp?
(a) Number
(b) Number
i
MI
(c) Number i
Units
Units
Units
<

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