Pearson eText -- Physics for Scientists and Engineers with Modern Physics -- Instant Access (Pearson+)
Pearson eText -- Physics for Scientists and Engineers with Modern Physics -- Instant Access (Pearson+)
5th Edition
ISBN: 9780137488179
Author: Douglas Giancoli
Publisher: PEARSON+
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Chapter 37, Problem 12Q
To determine

Whether wave theory and particle theory can be distinguished by referring the intensity of light and distance from the source.

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A) What is the approximate wavelength emitted from helium represented by the bright yellow emission line below?  What is it's frequency in HZ and energy in eV? (1 eV= 1.6 x 10-19 joules).  B) If the excited helium electron that emits a yellow photon in this line starts with a potential energy of 8 eV, what is the potential energy of the electron afterwards? Assume that the emission of a yellow photon is allowed by the laws of quantum mechanics. Also don't worry about the other electron.
What is the energy of a light quantum (photon) which has a wavelength of 600nm? Compare the energy with the electron wave energy calculated in problem 2 (6.6935 x 10-25) and disscuss the difference.
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