Question: A certain very bright star has an effective surface temperature of 20,000 K. (a) Assuming that it radiates as a blackbody, what is the wavelength

A certain very bright star has an effective surface temperature of 20,000 K.
(a) Assuming that it radiates as a blackbody, what is the wavelength at which u(λ) is maximum?

(b) In what part of the electromagnetic spectrum does the maximum lie?

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