On heating one end of a rod, the temperature of whole rod will be uniform when
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(d) $\frac{{dQ}}{{dt}} = - KA\frac{{d\theta }}{{dx}}$; when $K = \infty ,\;\;\frac{{d\theta }}{{dx}} = 0$
i.e. $\theta$ is independent of $x$ i.e. constant or uniform.
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