Q. 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) 37,500 kg
• (D) nothing can be predioted as the data is insufficient