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

A blackbody is an object that completely absorbs all incoming electromagnetic radiation and radiates energy at all wavelengths. As its temperature increases, the distribution of energy it emits changes, with the peak of emission shifting to shorter (higher frequency) wavelengths. This peak is known as the Wien displacement law and is directly related to the object's temperature. Therefore, option C is true - a blackbody's energy peaks at the wavelength corresponding to its temperature.

What Is TRUE of a Blackbody