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CSS Solved Papers
Physics Chemistry

Engineering :: Heat Transfer


  Two rods one of copper and the other of mild steel, both of diameter 20 mm and length 250 mm are coated with a uniform layer of wax all around. These rods are placed vertically in a boiling water bath with 200 mm, length of each rod projecting outside. If the melting point of wax is 10?C, then
[A]. equal quantity of wax will meet on the two rods[B]. more wax will melt on copper rod as compared to mild steel rod
[C]. more wax will melt on mild steel rod as compared to copper rod[D]. nothing can be predioted as the data is insufficient

Answer: Option B


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