Transmission Of Heat Question 337
Question: When a body cools by radiation, the rate of decrease of its temperature depends upon
Options:
A) Specific heat of the body
B) Mass of the body
C) Nature of the surface of the body
D) All of these are correct.
Show Answer
Answer:
Correct Answer: D
Solution:
[d] $ -ms\frac{dT}{dt}=4Ae\sigma \Delta T\times T^{3} $
$ \Rightarrow \frac{dT}{dt}=-\frac{\sigma eA \times 4J^{3}\Delta T}{ms} $
BETA
