A small object is placed in a large evacuated enclosure whose walls are maintained at a constant temperature. If the object is initially at a higher temperature than the walls, how does it lose heat?

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TestHub · Accepted Answer

Heat transfer can occur through conduction, convection, and radiation. In an evacuated enclosure, there is no medium for heat transfer by conduction or convection. Therefore, the object can only lose heat through radiation.

The object, being at a higher temperature, will radiate more energy than it absorbs from the cooler walls, leading to a net heat loss by radiation.

Physics - Heat & Thermo Question with Solution | TestHub

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