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KCET2007PhysicsThermal Properties of Matter

The surface temperature of the sun which has maximum energy emission at 500 ~nm is 6000 ~K . The temperature of a star which has maximum energy emission at 400 ~nm will be

Options

  1. A8500 ~K
  2. B4500 ~K
  3. C7500 ~K
  4. D6500 ~K

Correct answer

C. 7500 ~K

Step-by-step solution

By using Wien's displacement law, ( _ m )₁ T₁= ( _ m )₂ T₂ 500 6000=400 T₂ T₂= 500 6000 400 T₂=7500 ~K

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