An object having a fixed emissivity of 0. 725 radiates heat at a rate of 10 w when it is at an absolute temperature t. If its te

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1 year ago

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mperature is doubled to 2t, at what rate will it now radiate?.

1 answer:

koban [17] · Answer 1 · 2024-03-08T08:09:21+03:00

If the temperature is doubled to 2t, the rate at which it will now radiate is 160 W.

<h3>What is meant by emissivity?</h3>

The ability of a substance to reflect heat radiation from its surface is measured by its emissivity.
Thermal radiation is a type of electromagnetic radiation that includes infrared radiation, which the human eye cannot perceive, as well as visible radiation (light).
According to the Stefan-Boltzmann law, emissivity is the quantitative comparison between the thermal radiation of a surface and that of an ideal black surface at a given temperature.
Between 0 and 1 is the ratio's range.

<h3>What is energy radiation?</h3>

The emissivity of a substance is a measurement of how well it reflects heat radiation from its surface.
Two elements that affect power dissipation in the form of radiation are the material's surface emissivity and the temperature difference between the chip surface and the surrounding air.

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