Question: Using Planck's formula, find the power radiated by a unit area of a black body within a narrow wavelength interval = 1.0 nm close to

Using Planck's formula, find the power radiated by a unit area of a black body within a narrow wavelength interval ∆λ = 1.0 nm close to the maximum of spectral radiation density at a temperature T = 3000 K of the body.

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