Answer
(e)
Work Step by Step
If the thermal conductivity of a material is $k$, its cross-sectional area is $A$, and its length $L$, the heat exchanged in the time $t$ is
$Q=kA(\displaystyle \frac{\Delta T}{L})t \qquad($16-16$)$
The heat exchanged depends an all of (a) to (d), and does not depend on $c$, the specific heat of the slab, or choice (e).
