Find the energy of the following. Express your answers in units of electron volts, noting that 1 eV = 1.60 × 10-¹⁹ J. (a) a photon having a frequency of 6.50 x 10¹7 Hz (b) a photon having a wavelength of 2.50 x 10² nm Step 1 (a) The energy of a photon is given by E = hf, where h = 6.63 x 10-34 Js is Planck's constant and f the frequency of the electromagnetic wave associated with the photon. A photon having frequency f = 6.50 x 10¹7 Hz has an energy, expressed in units of electron volts, of E = hf = ·s) ([ x 10³ ev. 6.63 x 10-34 J. x 1017 Hz 1 eV x 10-19.

Classical Dynamics of Particles and Systems
5th Edition
ISBN:9780534408961
Author:Stephen T. Thornton, Jerry B. Marion
Publisher:Stephen T. Thornton, Jerry B. Marion
Chapter14: Special Theory Of Relativity
Section: Chapter Questions
Problem 14.42P
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Find the energy of the following. Express your answers in units of electron volts, noting that 1 eV = 1.60 x 10-19 J.
(a) a photon having a frequency of 6.50 x 10¹7 Hz
(b) a photon having a wavelength of 2.50 x 10² nm
Step 1
(a) The energy of a photon is given by
E = hf,
where h = 6.63 x 10-34 Js is Planck's constant and f the frequency of the electromagnetic wave associated with the photon. A photon having frequency
f = 6.50 x 10¹7 Hz has an energy, expressed in units of electron volts, of
E = hf
= (6.63 × 10-34 J. s) (1
x 10³ ev.
x 10¹7 Hz)
1 eV
x 10-19 1
Transcribed Image Text:Find the energy of the following. Express your answers in units of electron volts, noting that 1 eV = 1.60 x 10-19 J. (a) a photon having a frequency of 6.50 x 10¹7 Hz (b) a photon having a wavelength of 2.50 x 10² nm Step 1 (a) The energy of a photon is given by E = hf, where h = 6.63 x 10-34 Js is Planck's constant and f the frequency of the electromagnetic wave associated with the photon. A photon having frequency f = 6.50 x 10¹7 Hz has an energy, expressed in units of electron volts, of E = hf = (6.63 × 10-34 J. s) (1 x 10³ ev. x 10¹7 Hz) 1 eV x 10-19 1
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