The coefficients of thermal conductivity of copper, mercury and glass are K c , K m and K g respectively, such that K c K m K g . If the same quantity of heat is to flow per second per

Question

The coefficients of thermal conductivity of copper, mercury and glass are $K_{c}$ , $K_{m}$ and $K_{g}$ respectively, such that $K_{c} > K_{m} > K_{g}$ . If the same quantity of heat is to flow per second per unit area of each and the corresponding temperature gradients are $X_{c}$ , $X_{m}$ and $X_{g}$ , then:

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Answer:

C

Solution:

$\frac{Q}{A t} = K X$ is the same, so $X \propto \frac{1}{K}$ . The order is $X_{c} < X_{m} < X_{g}$ . C.

TestHub · Accepted Answer

A t Q ​ = K X is the same, so X ∝ K 1 ​ . The order is X c ​ < X m ​ < X g ​ . C.

Physics - Heat & Thermo Question with Solution | TestHub

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