Final answer:
The higher the temperature of an object, the higher frequency it radiates. This is a principle observed in black body radiation. As an object gets hotter, they emit higher frequency radiations.
Step-by-step explanation:
The concept in question here relates to an area of Physics known as black body radiation. The correct answer is that the higher the temperature of an object, the higher frequency it radiates. This is a principle observed in black body radiation which states that the frequency of the emitted radiation increases with an increase in the temperature of the object.
An everyday example of this concept is the heating of a metal, such as an iron. Initially, if you start raising the temperature of the iron, it will first glow red. This 'red' glow indicates that the iron is emitting radiations of lower frequency because red light has a lower frequency than other visible light. But as the iron gets hotter, it starts to glow white - meaning it is now emitting higher frequency radiation, which includes all the colors of visible light, thereby appearing white to our eyes.
Learn more about black body radiation