A black body is at 2880 K. The energy radiated in the wavelength band 499-500 nm is U1, in 999-1000 nm is U2, and in 1499-1500 nm is U3. Given the Wien constant b = 2.88 * 10⁶ nm.K, which statement is correct?

Question

Accepted Answer

U2 > U1. lambda_max = 2.88*10⁶ / 2880 = 1000 nm, so the 999-1000 nm band sits at the spectral peak, giving U2 > U1 (and also U2 > U3).

A black body is at 2880 K. The energy radiated in the wavelength band 499-500 nm is U1, in 999-1000 nm is U2, and in 1499-1500 nm is U3. Given the Wien constant b = 2.88 * 10⁶ nm.K, which statement is correct?

Solution

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