Physics - Heat & Thermo Question with Solution | TestHub
PhysicsHeat & ThermoHeat TransferMedium2 min
PhysicsMediummultiple choice
The curved surface of a uniform rod is insulated from the surroundings. Its ends are kept at temperatures and () for a long time. At an instant, the temperature starts to decrease at a constant, slow rate. If the thermal capacity of the rod material is considered, which of the following statements is/are correct?
Options:(select one or more)
Answer:
D
Solution:
The rod is no longer in steady state. As falls the rod temperatures fall, so the rod gives out heat: the flow leaving at the cold end exceeds the flow entering at the hot end. So A is false. The statements in B and C describe patterns that the data do not establish (the flow changes along the whole rod, not only near the hot end, and it is not maximum at mid section). The printed key is D.
Subject:PhysicsTopic:Heat & ThermoSubtopic:Heat Transfer
⏱ 2m
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