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Question: Answered & Verified by Expert
A black body at 1373  emits maximum energy corresponding to a wavelength of 1.78 microns. The temperature of the moon for which λm=14 micron would be
PhysicsThermal Properties of MatterNEET
Options:
  • A 62.6 
  • B -58.9 
  • C -63.7 
  • D 64.2 
Solution:
2705 Upvotes Verified Answer
The correct answer is: -63.7 
T2T1= λm1λm2=1.7814

T2=1.7814 ×T1=1.78141373+273

= 209.3 K= 209.3 -273=-63.7
 

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