If the temperature of an object increases, what happens to the rate of heat tran

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Question: If the temperature of an object increases, what happens to the rate of heat transfer by radiation?

Options:

Correct Answer: Increases

Solution:

The rate of heat transfer by radiation increases with the fourth power of the absolute temperature, according to Stefan-Boltzmann law.

If the temperature of an object increases, what happens to the rate of heat transfer by radiation?

If the temperature of an object increases, what happens to the rate of heat transfer by radiation?

Correct Answer: Rate of heat transfer increases.

Step 1: Understand that heat transfer by radiation is the way heat moves from one object to another without needing a medium (like air or water).
Step 2: Know that all objects emit radiation, and the amount of radiation they emit depends on their temperature.
Step 3: Learn about the Stefan-Boltzmann law, which states that the power (or rate) of heat transfer by radiation is proportional to the fourth power of the absolute temperature of the object.
Step 4: This means that if the temperature of the object increases, the rate at which it emits heat increases very quickly.
Step 5: For example, if you double the temperature, the rate of heat transfer increases by a factor of 16 (because 2^4 = 16).
Step 6: Therefore, as the temperature of an object increases, the rate of heat transfer by radiation also increases significantly.

Stefan-Boltzmann Law – The law states that the power radiated by a black body is proportional to the fourth power of its absolute temperature.
Heat Transfer – The process by which thermal energy moves from a hotter object to a cooler one, with radiation being one of the three main modes (conduction, convection, radiation).