Question

A star has a surface temperature of 12,000 K. At what wavelength does its blackbody curve peak?

Answer 1

241.5 nm via Wein's Displacement Law

Explanation:

Wein's Law is `lambda=b/T` where b is Wein's constant of proportionality equal to `2.89×10^(−3) m K`

This answer is valid so long as the intensity is plotted as a function of wavelength. If frequency or some other variable is used on the horizontal axis, the peak will be at a different wavelength

Hyperphysics website on Blackbody Radiation