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      Question

      A brass boiler has a base area of 0.2 m2 and

      thickness 1.0 cm. It boils water at the rate of 6.0 kg/min when placed on a stove. Calculate the temperature of the part of the flame in contact with the boiler. Also the temperature at which water boils is 100° C Thermal conductivity of brass 109 Js-1 m-1K-1, heat of vaporization of water = 2256 × 103 J
      A 283.45°C Correct Answer Incorrect Answer
      B 238.43 °C Correct Answer Incorrect Answer
      C 263.49 °C Correct Answer Incorrect Answer
      D 203.48°C Correct Answer Incorrect Answer

      Solution

      The correct answer is D

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