AP EAMCET202021 Sep 2020Evening ShiftPhysicsThermal Properties of MatterActual
A body at (3000 ~K ) emits maximum energy at a wavelength of (9660 Å ). If the sun emits maximum energy at a wavelength of (4950 Å ), what would be the temperature of the sun?
Options
- A(5855 ~K )
- B(7000 ~K )
- C(4250 ~K )
- D(8000 ~K )
Correct answer
A. (5855 ~K )
Step-by-step solution
Temperature of body, (T₁=3000 ~K ) Body emits maximum energy at wavelength, ( ₁=9660 Å ) Wavelength of radiation emitted by sun, ( ₂=4950 Å ) Sun's temperature, (T₂= ) ? According to Wien's displacement law, ( array ll & 1 T & = b T [b= Constant of array ) proportionality] ( array llll & ₁ ₂ = T₂ T₁ & T₂ = T₁ ₁ ₂ = 3000 9660 4950 & =5854.5 ~K 5855 ~K array )