You are heating two chunks of metal of the same size and shape. One is made of lead and is heated to 400 K. The other is made of iron and is also heated to 400 K. Which of the following statements apply to the thermal radiation the two chunks emit?
A) The two spectra peak at the same wavelength.
B) The spectra cannot be compared because they come from different materials.
C) The lead spectrum peak is at a shorter wavelength than the iron spectrum peak.
D) The lead spectrum peak is at a longer wavelength than the iron spectrum peak.
A) The two spectra peak at the same wavelength.
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