What is true of a blackbody?
A)It appears black to us, regardless of its temperature.
B)Its energy is not a continuum.
C)Its energy peaks at the wavelength determined by its temperature.
D)If its temperature doubled, the peak in its curve would be doubled in wavelength.
E)It has a complete absence of thermal energy.

Question

Quizplus · Accepted Answer

The energy emitted by a blackbody peaks at the wavelength determined by its temperature, which is known as the Wien's law. As the temperature increases, so does the peak wavelength. A blackbody's energy spectrum follows Planck's Law, which states that the energy emitted by a blackbody is proportional to the temperature raised to the fourth power and that the peak wavelength of this energy is inversely proportional to the temperature. Therefore, as the temperature of a blackbody increases, the energy emitted shifts to shorter wavelengths and the peak of its energy spectrum is determined by its temperature.

What Is True of a Blackbody