College Physics:
11th Edition
ISBN: 9781305965515
Author: SERWAY, Raymond A.
Publisher: Brooks/Cole Pub Co
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Question
Chapter 22, Problem 4P
(a)
To determine
The expression for the wavelength of a photon.
(b)
To determine
What does the equation say about the wavelengths of high energy photons.
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(a) Find a symbolic expression for the wavelength A of a photon in terms of its energy E, Planck's constant h, and the speed of light c. (Do not substitute numerical values; use variables only.)
(b) What does the equation say about the wavelengths of higher-energy photons?
O higher energy photons have shorter wavelengths
O higher energy photons have longer wavelengths
O energy and wavelength are not related
(b) Following up on part (a), calculate the energy (in J) of a typical photon. Assume for this approximate calculation that each photon has the wavelength calculated in part (a). The
hc
where h is Planck's constant and is equal to 6.626 x 10-34 Jxs, c is the speed of light in m/s, and is the wavelength in m.
energy of a photon is given by E =
λ
Planck’s constant has the value h = 6.626 × 10–34 joule-seconds (J-s), and the speed of light is c = 3 × 108 m/s.
Using these values, calculate the wavelength carried by photons emitted with an energy of 1.1 × 10-19 J. Pick the closest value:
Chapter 22 Solutions
College Physics:
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