Transmission Of Heat Question 55
Question: The quantity of heat which crosses unit area of a metal plate during conduction depends upon
[MP PMT 1992; JIPMER 1997]
Options:
A) The density of the metal
B) The temperature gradient perpendicular to the area
C) The temperature to which the metal is heated
D) The area of the metal plate
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Answer:
Correct Answer: B
Solution:
$ \frac{dQ}{dt}=KA\frac{d\theta }{dl} $
Therefore $ \frac{dQ}{dt}\propto \frac{d\theta }{dl} $ (Temperature gradient)