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Transfer of heat - class-XI

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Multiple Choice

A geyser heats water flowing at the rate of 4 litre per minutes from 30 C to 85 C. If the geyser operates on gas burner then the amount of heat used per minute is :

  1. $9.24\times { 10 }^{ 5 }$J
  2. $6.24\times { 10 }^{ 7 }$J
  3. $9.24\times { 10 }^{ 7 }$J
  4. $6.24\times { 10 }^{ 5 }$J
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