50g of copper is heated to increase its temperature by 10∘C. If the same quantity of heat is given to 10g of water, then what would be the rise in its temperature? (specific heat of copper =420J/kg/∘C, specific heat of water =4200J/kg/∘C)
400g of iron is heated to increase its temperature by 10∘C. If the same quantity of heat is given to 200g of water, the rise in its temperature is ___ ∘C (specific heat of iron = 420J/kg/∘C, specific heat of water = 4200J/kg/∘C)