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To what temperature must we heat an object until its peak thermal radiation is in the red region of the spectrum (λ = 650 nm)?

To what temperature must we heat an object until its peak thermal radiation is in the red region of the spectrum (λ = 650 nm)?

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**(6 points)** To what temperature must we heat an object until its peak thermal radiation is in the red region of the spectrum (λ = 650 nm)?
Transcribed Image Text:**(6 points)** To what temperature must we heat an object until its peak thermal radiation is in the red region of the spectrum (λ = 650 nm)?
Expert Solution
Concept and Principle:
  • The wavelength of the thermal radiation coming from an object can be calculated by assuming the object to be a blackbody. A blackbody is an ideal object that absorbs all the radiation that falls on it.

 

  • The maximum wavelength emitted by a blackbody is given by Wien's displacement law. It states that the black-body radiation curve for different temperatures will peak at different wavelengths that are inversely proportional to the temperature.

 

  • The peak wavelength emitted by a blackbody is given by,

λmax=2898 μm⋅KT

Here T is the absolute temperature of the object.

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