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A copper ball of mass 100gm is 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)


( A ) 885C
( B ) 800C
( C ) 825C
( D ) 1250C

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