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Question

t is the units of emissive power in Stefan’s law ?

  1. W s to the power of negative 1 end exponent
  2. W
  3. Ws to the power of negative 1 space end exponent m to the power of negative 2 end exponent
  4. W m to the power of negative 2 end exponent

The correct answer is: W m to the power of negative 2 end exponent

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