Concept explainers
(a)
The observed wavelength of a galaxy for the given distance.
(a)
Answer to Problem 25P
The observed wavelength of a galaxy whose distance from Earth is
Explanation of Solution
Given:
Wavelength line in the Balmer series of the hydrogen atom is
Distance from Earth is
Formula used:
Using Doppler effect,
Calculation:
Using Hubble’s law, velocity of the galaxy is
Now, calculating observed wavelength of the galaxy using Doppler effect
Conclusion:
Thus, the observed wavelength of a galaxy whose distance from Earth is
(b)
The observed wavelength of a galaxy for the given distance.
(b)
Answer to Problem 25P
The observed wavelength of a galaxy whose distance from Earth is
Explanation of Solution
Given:
Wavelength line in the Balmer series of the hydrogen atom is
Distance from Earth is
Calculation:
Using Hubble’s law, velocity of the galaxy is
Now, calculating observed wavelength of the galaxy using Doppler effect
Conclusion:
Thus, the observed wavelength of a galaxy whose distance from Earth is
(c)
The observed wavelength of a galaxy for the given distance.
(c)
Answer to Problem 25P
The observed wavelength of a galaxy whose distance from Earth is
Explanation of Solution
Given:
Wavelength line in the Balmer series of the hydrogen atom is
Distance from Earth is
Calculation:
Using Hubble’s law, velocity of the galaxy is
Now, calculating observed wavelength of the galaxy using Doppler effect
Conclusion:
Thus, the observed wavelength of a galaxy whose distance from Earth is
Chapter 33 Solutions
Physics: Principles with Applications
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