COLLEGE PHYSICS
2nd Edition
ISBN: 9781464196393
Author: Freedman
Publisher: MAC HIGHER
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Chapter 27, Problem 6QAP
To determine
The two characteristics of binding energy that are comparable to the work function and the two characteristics that are dissimilar to the concept of the work function.
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Justify the following hypothesis by photoelectric effect: “For each metal, there exists a
minimum binding energy for an electron characteristic of the element, called the work
function (W0).
8-1. Show that the atomic unit of energy can be written as
ħ²
e²
ma
Απερβο
En
=
me
16π εjht
J 5
Question 2 (1) Assume that the average energy of β-rays (electrons) emitted from the S-ray source is 0.8 MeV, and the average ionization energy of gas molecules (atoms) in the GM counter tube is about 30 eV. Find the number of gas molecules ionized when one electron enters the GM tube (1MeV = 10°eV). (2) Assuming that the electrons and cations thus generated are attracted to the electrode as they are, what is the total amount of negative charge generated by ionization in C (coulombs)? (3) If this ionization takes 10-4s, what is the current flowing through the anode?
Chapter 27 Solutions
COLLEGE PHYSICS
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