At which of the following temperatures does the Earth radiate energy at the greatest rate or intensity?

Question

Quizplus · Accepted Answer

According to Wien's law, the wavelength of maximum radiated energy is inversely proportional to the temperature of the radiating body. Higher the temperature, shorter the wavelength of maximum radiation. As the Earth's surface temperature is around 15°C on average, the corresponding wavelength is around 10 micrometers. At 105°C, the Earth's surface radiates maximum energy in the infrared part of the spectrum, which corresponds to a wavelength of around 2.8 micrometers. Therefore, D is the correct choice.

At Which of the Following Temperatures Does the Earth Radiate