The emissivity for a black body is?

Question

The emissivity for a black body is?

0
0.5
0.75
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LohaHridoy

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2025-01-04 04:42

1 Answers

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AhmedNazir · Accepted Answer · 2022-09-01T13:21:41+06:00

AhmedNazir

Answer: Option 4

Real materials emit energy at a fraction—called the emissivity—of black-body energy levels. By definition, a black body in thermal equilibrium has an emissivity of ε = 1.

4 views Answered 2022-09-01 13:21