At which temperature would Earth be radiating energy at the greatest rate or intensity?

Question

​At which temperature would Earth be radiating energy at the greatest rate or intensity?

Quizplus · Accepted Answer

According to Wien's Law, the wavelength of maximum radiation emitted by an object is inversely proportional to its temperature. Therefore, higher the temperature, shorter the wavelength at which maximum radiation is emitted. As Earth emits primarily in the infrared part of the spectrum, a higher temperature of Earth would correspond to a higher frequency of radiation being emitted. Therefore, the Earth would be radiating energy at its greatest rate or intensity at a higher temperature, which is given as 105°F in option E.

​At Which Temperature Would Earth Be Radiating Energy at the Greatest

At Which Temperature Would Earth Be Radiating Energy at the Greatest