Question

62. A copper ball of mass 100 gm is at a temperature T. It is dropped in a copper calorimeter of mass 100 gm, filled with 170 gm of water at room temperature. Subsequently, the temperature of the system is found to be 75^°C. T is given by : (Given : room temperature = 30^° C, specific heat of copper = 0.1 cal/gm^°C (1) 1250^°C (2) 825^°C (3) 800^°C (4) 885^° C

Answer 1