NEET Physics Question - Thermal Physics - Heat Transfer

Assertion (A): Bodies radiate heat at all temperature.

Reason (R): Rate of radiation of heat is proportional to the fourth power of absolute temperature.

Both (A) & (R) are true and the (R) is the correct explanation of the (A)

Both (A) & (R) are true but the (R) is not the correct explanation of the (A)

(A) is true but (R) is false

Both (A) and (R) are false

Solution:

All bodies above 0 K radiate thermal energy. The Stefan-Boltzmann law states that the rate of radiation P is proportional to the fourth power of absolute temperature \(T^4\), i.e., \(P \propto T^4\). This law confirms that radiation occurs at any temperature above absolute zero and quantifies it. Thus, R explains A.

Rankers Physics

Heat Radiation and Temperature

Solution:

Leave a Reply Cancel reply