The temperature of furnace is $200\,^oC$, in its spectrum the maximum intensity is obtained at about $400\,\mathop A\limits^o $, If the maximum intensity is at $200\,\mathop A\limits^o $. Calculate the temperature of the furnace in ${}^oC$.  ......... $^oC$

  • A

     $400$

  • B

     $673$

  • C

     $946$

  • D

    None of these

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