If the temperature of a body is heated, relative to the original emission wavelength how will the wavelength of the radiation that it emits change?

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BlackTom AI · Accepted Answer

The question asks how the peak emission wavelength of a body’s radiation changes when the body is heated relative to its original emission wavelength.
Option a: Longer. If heating caused the peak wavelength to become longer, that would imply a shift to lower energies and cooler emission, which contradicts the effect of increasing temperature. Heating raises energy and pushes the peak to shorter wavelengths, not longer.
Option b: The same. A change in temperature generally alters the spectrum. When a body is heated, its emission spectrum shifts; therefore, the peak wavelength is not expected to stay unchanged. The phenomenon described by heating temperatures indicates a shift in wavelength, not a preservation of equality.
Option c: Shorter. This option matches the well-known result from Wien’s displacement law: as temperature increases, the peak of the blackbody radiation curve shifts to shorter wavelengths. In other words, hotter objects emit radiation whose peak is at a shorter wavelength than before.
In summary, heating a body moves the emission peak toward shorter wavelengths, ruling out options a and b and supporting option c as the correct description of the shift in wavelength with increased temperature.

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If the temperature of a body is heated, relative to the original emission wavelength how will the wavelength of the radiation that it emits change?

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