At which of these Kelvin temperatures would a blackbody radiate mostly at visiblewavelengths?
A)6 K
B)60 K
C)600 K
D)6000 K
E)None of these; a blackbody doesn't radiate visible light.

Question

Quizplus · Accepted Answer

According to Wien's displacement law, the wavelength at which a blackbody radiates most intensely is inversely proportional to its temperature. At 6000 K, a blackbody would radiate mostly at a wavelength of around 484 nanometers, which is in the visible range (blue-green light). Therefore, choice D is the best answer. According to Wien's Law, the wavelength at which a blackbody radiates most intensely shifts to shorter wavelengths as the temperature increases. At 6000 K, the blackbody would radiate mostly in the visible range, making option D the correct answer.

At Which of These Kelvin Temperatures Would a Blackbody Radiate