Answered: The surface temperature of Sun is about…

The surface temperature of Sun is about 6000 K. If we consider the Sun as a black body, what is the radiation power per unit of area?(Given the Stefan-Boltzmann constant is 5.678x10^-8W/K^4

Horizons: Exploring the Universe (MindTap Course List)

14th Edition

ISBN:9781305960961

Author:Michael A. Seeds, Dana Backman

Publisher:Michael A. Seeds, Dana Backman

Chapter6: Atoms And Spectra

Section: Chapter Questions

Problem 7RQ

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Wien's displacement law

Students often get confused between Wien's displacement law and Planck's radiation law. Although both are historically related, yet they are conceptually different. Planck's law helps determine the spectrum of a blackbody, while Wien's law determines the relationship between peak wavelength and temperature.

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q4- The surface temperature of Sun is about 6000 K. If we consider the Sun as a black body, what is the radiation power per unit of area?(Given the Stefan-Boltzmann constant is 5.678x10^-8W/K^4

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Use Wien's Law to calculate the peak wavelength of light coming from the Sun. Assume T=5800 K for the surface temperature of the Sun. Wein's displacement law says that the blackbody temperature and peak wavelength multiplied together give a constant of 0.29 cm-K. (K is degrees Kelvin). Convert the wavelength from part A into a frequency. The product of wavelength and frequency for electromagnetic radiation is a constant, the speed of light (c), 3 x 10^10 cm/s.
Q1 Find the total energy and the greatest wavelength of the energy emitted from the surface of the sun if you know that the amount of illumination emitted from the surface of the sun will increase by 10⁶ * 6 times when its surface temperature increases by 100 k (σ = 5.67× 10⁻⁸ w/m²K⁴ )
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Use Wien's Law to calculate the peak wavelength of light coming from the Sun. Assume T=5800 K for the surface temperature of the Sun. Wein's displacement law says that the blackbody temperature and peak wavelength multiplied together give a constant of 0.29 cm-K. (K is degrees Kelvin).