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one week left for my board exams.... so PLEASE ANSWER When we consider tranfer of heat through a body of length x area of c.s. A and having temperature diff. T 2 -T 1 (which is fixed) and termally insulated side walls, then it is considered that initially the energy from the molecules present at one cross sec^n is used by the molecules in the immediate next c.sec^n in 2 ways :- 1) in increasing its temperature 2) in conducting it to the next layer... But after sometime when steady state is reached it is said that the layers donot increase their temperature further and each layer maintains a constant temperature which decreases as we move towards the colder end. It then only conducts. But why does the process of increasing tempearature cease after sometime ? what is the reason behind this?


one week left for my board exams.... so 
PLEASE ANSWER
 
 
When we consider tranfer of heat through a body of length x area of c.s. A and having temperature diff. T2-T1 (which is fixed) and termally insulated side walls, then it is considered that initially the energy from the molecules present at one cross sec^n is used by the molecules in the immediate next c.sec^n in 2 ways :-
1) in increasing its temperature
2) in conducting it to the next layer...
But after sometime when steady state is reached it is said that the layers donot increase their temperature further and each layer maintains a constant temperature which decreases as we move towards the colder end. It then only conducts. But why does the process of increasing tempearature cease after sometime? what is the reason behind this?
 


Grade:11

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