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

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

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