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A copper ball of mass 100gmis at a temperature T. It is dropped in a copper calorimeter of mass 100gm, filled with 170gm of water at room temperature.Subsequently, the temperature of the system is found to be 75C. T is given by : (Given : room temperature=30C, specific heat of copper =0.1cal/gmC)

(1)800C(2)885C(3)1250C(4)825C

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