End $A$ of a copper rod is maintained in a steam chamber at $100\,^{\circ}C$ and the other end $B$ is maintained at $0\,^{\circ}C$. Assuming $x = 0$ at $A$,the $T-x$ graph in steady state will be:

When the two ends of a metal rod are maintained at different temperatures and after some time every point of the rod attains a constant temperature,then:

The quantity of heat which crosses unit area of a metal plate during conduction depends upon

$A$ thermocouple is an arrangement of two different metals to :-

Define heat transfer in solids.

Assertion: $A$ thermos bottle consists of a double-walled glass vessel with the space between the two walls evacuated,so that the heat transfer between the contents of the bottle and the outside is minimized.
Reason: The vacuum between the two walls inhibits the heat transfer by the radiation mechanism.
Which of the following is correct?