The surface temperature of Polaris is about 5973 K. At what wavelength is the peak radiation emitted from Polaris?

Polaris is not a luminous body. Therefore, it does not emit radiation.

550 nm

485 nm

155 nm

The solution would be like this for this specific problem:

Given: 5973 K

λ_peak = 2.898 / 5973 K

= 0.00048518 mm = 0.48518 μ = 4851.8 Ậ

Polaris emits peak radiation at 485 nm wavelength.

To add, Polaris, commonly the North Star or Pole Star, is the brightest star in the constellation of Ursa Minor.