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In an experiment a sphere of aluminium o...

In an experiment a sphere of aluminium of mass 0.20 kg is heated upto `150^(@)`C. Immediately, it is put into water of volume 150 cc at `27^(@)C` kept in a calorimeter of water equivalent to 0.025 kg. Final temperature of the system is `40^(@)C`. The specific heat of aluminium is (take 4.2 Joule = 1 calorie)

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