A metal has a threshold frequency of 5.8 x 1014 s-1 for the photoelectric effect. Predict the effect of each of the following changes on the number of electrons emitted and their kinetic energy. a. The frequency of radiation striking the metal increases from 5.2 x 1014 s-1 to 5.6 x 1014 s-1. b. The frequency of radiation striking the metal is lowered from 6.2 x 1014 s-1 to 5.9 x 1014 s-1. С. The metal is moved closer to the source of radiation of frequency 6.1 x 1014 s-1.
A metal has a threshold frequency of 5.8 x 1014 s-1 for the photoelectric effect. Predict the effect of each of the following changes on the number of electrons emitted and their kinetic energy. a. The frequency of radiation striking the metal increases from 5.2 x 1014 s-1 to 5.6 x 1014 s-1. b. The frequency of radiation striking the metal is lowered from 6.2 x 1014 s-1 to 5.9 x 1014 s-1. С. The metal is moved closer to the source of radiation of frequency 6.1 x 1014 s-1.
Principles of Modern Chemistry
8th Edition
ISBN:9781305079113
Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Chapter4: Introduction To Quantum Mechanics
Section: Chapter Questions
Problem 43P
Related questions
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im stuck on question 1
![assuming that both the electron and photon be treated as particles, and the collision treated as elastic (no
energy is transferred to the electron, which is set in motion. Compton was able to describe this behavior by
he electron, changes its wavelength to 'A + AN', which leads to a decrease in energy of the photon. This
oss in total energy or momentum).
Problems:
1.
A metal has a threshold frequency of 5.8 x 1014 s-1 for the photoelectric effect. Predict the effect of
each of the following changes on the number of electrons emitted and their kinetic energy.
a.
The frequency of radiation striking the metal increases from 5.2 x 1014 s-1 to 5.6 x 1014 s-1.
b. The frequency of radiation striking the metal is lowered from 6.2 x 1014 s-1 to 5.9 x 1014 s-1.
C. The metal is moved closer to the source of radiation of frequency 6.1 x 1014 s-1.
с.
If the threshold frequency, vo, of a metal is 6.7 x 1014 s1, determine the kinetic energy of a single
electron that is emitted when the frequency of the radiation that strikes the metal is 1.0 x 1015 s1, as
well as its speed.
An AM radio station broadcasts at 1010 kHz, and its FM partner broadcasts at 98.3 MHz. Calculate
3.
and compare the energy of the photons emitted by these two radio stations.
[Ans: AM: 6.692 x 10-28 J; FM: 6.51 x 10-26 J]
Sirius, the brightest star in our night sky, has a surface temperature of about 10,000 K. Find the
4.
wavelength at which Sirius emits most intensely. [Ans: 290 nm]
wie moon lo has an active volcano named Pele, whose temperature can be as high as 320 °C
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Transcribed Image Text:assuming that both the electron and photon be treated as particles, and the collision treated as elastic (no
energy is transferred to the electron, which is set in motion. Compton was able to describe this behavior by
he electron, changes its wavelength to 'A + AN', which leads to a decrease in energy of the photon. This
oss in total energy or momentum).
Problems:
1.
A metal has a threshold frequency of 5.8 x 1014 s-1 for the photoelectric effect. Predict the effect of
each of the following changes on the number of electrons emitted and their kinetic energy.
a.
The frequency of radiation striking the metal increases from 5.2 x 1014 s-1 to 5.6 x 1014 s-1.
b. The frequency of radiation striking the metal is lowered from 6.2 x 1014 s-1 to 5.9 x 1014 s-1.
C. The metal is moved closer to the source of radiation of frequency 6.1 x 1014 s-1.
с.
If the threshold frequency, vo, of a metal is 6.7 x 1014 s1, determine the kinetic energy of a single
electron that is emitted when the frequency of the radiation that strikes the metal is 1.0 x 1015 s1, as
well as its speed.
An AM radio station broadcasts at 1010 kHz, and its FM partner broadcasts at 98.3 MHz. Calculate
3.
and compare the energy of the photons emitted by these two radio stations.
[Ans: AM: 6.692 x 10-28 J; FM: 6.51 x 10-26 J]
Sirius, the brightest star in our night sky, has a surface temperature of about 10,000 K. Find the
4.
wavelength at which Sirius emits most intensely. [Ans: 290 nm]
wie moon lo has an active volcano named Pele, whose temperature can be as high as 320 °C
2.
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