Assertion : Bodies radiate heat at all temper | vedclass

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Question

(A) According to the kinetic theory of matter,all bodies at temperatures above absolute zero $(0 \ K)$ possess thermal energy and emit electromagnetic

Vedclass · Accepted Answer

If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.

Vedclass · Answer

(A) According to the kinetic theory of matter,all bodies at temperatures above absolute zero $(0 \ K)$ possess thermal energy and emit electromagnetic radiation. Thus,the assertion is correct.According to the Stefan-Boltzmann law,the total energy radiated per unit surface area of a black body per unit time is directly proportional to the fourth power of its absolute temperature,given by $E = \sigma T^4$. This law explains why the rate of radiation depends on the temperature of the body. Therefore,the reason is correct and provides a valid explanation for the assertion.

$Assertion :$ Bodies radiate heat at all temperatures.
$Reason :$ Rate of radiation of heat is proportional to the fourth power of absolute temperature.

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$Assertion :$ Bodies radiate heat at all temperatures.$Reason :$ Rate of radiation of heat is proportional to the fourth power of absolute temperature.