The wavelength in the middle of the yellow part of the spectrum is 575 nm. What surface temperature would the Sun have if its peak were in the middle of the yellow?
A) 4000 K
B) 5100 K
C) 6000 K
D) 8600 K

Question

Quizplus · Accepted Answer

Wien's displacement law states that the wavelength of the peak of the blackbody radiation curve is inversely proportional to the temperature of the blackbody. The wavelength in the middle of the yellow part of the spectrum is 575 nm, which is longer than the wavelength of the peak of the Sun's blackbody radiation curve, which is 500 nm. Therefore, the Sun's surface temperature would be lower if its peak were in the middle of the yellow. The correct answer is B) 5100 K.

The Wavelength in the Middle of the Yellow Part of the Spectrum