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Q. Two balls of same material and finish have their diameters in the ratio of 2 : 1 and both are heated to same temperature and allowed to cool by radiation. Rate of cooling by big ball as compared to smaller one will be in the ratio of

  • (A) 1 :1
  • (B) 2: 1
  • (C) 1 : 2
  • (D) 4 : 1
  • Correct Answer - Option(C)
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  • Filed under category Heat Transfer
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