Question 1: A beam of electrons is incident upon gas of hydrogen atoms. a) What minimum speed must the electrons have to cause the emission of 656 nm light from the 3 --> 1 transition of hydrogen? b) Through what potential difference must the electrons be accelerated to have this speed?

Question 1: A beam of electrons is incident upon gas of hydrogen atoms. a) What minimum speed must the electrons have to cause the emission of 656 nm light from the 3 --> 1 transition of hydrogen? b) Through what potential difference must the electrons be accelerated to have this speed?

Stars and Galaxies (MindTap Course List)

10th Edition

ISBN:9781337399944

Author:Michael A. Seeds

Publisher:Michael A. Seeds

Chapter10: The Interstellar Medium

Section: Chapter Questions

Problem 8RQ

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Question

Question 1: A beam of electrons is incident upon gas of hydrogen atoms.

a) What minimum speed must the electrons have to cause the emission of 656 nm light from the 3 --> 1 transition of hydrogen?

b) Through what potential difference must the electrons be accelerated to have this speed?

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