A metal ball of mass 0.1 kg is heated upto 500°C and dropped into a vessel of heat capacity 800JK−1 and containing 0.5 kg water. The initial temperature of water and vessel is 30°C. What is the approximate percentage increment in the temperature of the water ?
[Specific Heat Capacities of water and metal are, respectively, 4200Jkg−1K−1 and 400JKg−1K−1]