Physics - Heat & Thermo Question with Solution | TestHub
PhysicsHeat & ThermoHeat TransferMedium2 min
PhysicsMediumsingle choice
The inner surfaces of a thermos flask are made mirror-like (polished) mainly to:
Options:
Answer:
B
Solution:
The gap between the walls is evacuated, which stops conduction and convection. The polished surfaces are poor emitters and good reflectors, so radiation loss is small. B.
Subject:PhysicsTopic:Heat & ThermoSubtopic:Heat Transfer
⏱ 2m
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