H.M. 1. Calculate the momentum of a visible photon that has a wavelength of 500 nm. 2. Find the velocity of an electron having the same momentum. 3. What is the energy of the electron, and how does it compare with the energy of the photon?

H.M. 1. Calculate the momentum of a visible photon that has a wavelength of 500 nm. 2. Find the velocity of an electron having the same momentum. 3. What is the energy of the electron, and how does it compare with the energy of the photon?

College Physics

10th Edition

ISBN:9781285737027

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter22: Reflection And Refraction Of Light

Section: Chapter Questions

Problem 4P

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Wien's displacement law

Students often get confused between Wien's displacement law and Planck's radiation law. Although both are historically related, yet they are conceptually different. Planck's law helps determine the spectrum of a blackbody, while Wien's law determines the relationship between peak wavelength and temperature.

Question

H.M.
1.
Calculate the momentum of a visible photon that has a wavelength of 500 nm.
2. Find the velocity of an electron having the same momentum.
3.
What is the energy of the electron, and how does it compare with the energy of the
photon?

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Step 1: Calculate the momentum of photon

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Step 2: Calculate the velocity of electron

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Step 3: Calculate the ratio of energy of electron and photon

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