Question

the peak wavelength of radiation emitted by earth is ______. a shorter than that emitted by the sun b longer than that emitted by the sun c about the same as the sun, except when sunspots are occurring d earth doesnt emit any radiation

Explanation:

The sun is a hot, high - temperature object (emitting short - wavelength radiation like visible light), while Earth is a cooler object. According to Wien's displacement law, cooler objects emit radiation with longer peak wavelengths. So Earth's peak radiation wavelength is longer than the sun's. Option A is wrong as Earth is cooler. Option C is wrong as their temperatures differ greatly. Option D is wrong as all objects with temperature emit radiation.

Answer:

B. Longer than that emitted by the sun