2 Kg of water of 60^(@)C is mixed with 1 kg of water at 30^(@)C kept in a vessel of heat capacity "220 J K"^(-1). The specific heat of water is "4200 J Kg"^(-1)K^(-1). Then the final temperature is nearly.

2 Kg of water of 60^(@)C is mixed with 1 kg of water at 30^(@)C kept i

1.	2 Kg of water of 60^(@)C is mixed with 1 kg of water at 30^(@)C kept in a vessel of heat capacity "220 J K"^(-1). The specific heat of water is "4200 J Kg"^(-1)K^(-1). Then the final temperature is nearly.
Answer» (a) `35^(@)C` (b) `45^(@)C` (c) `55^(@)C` (d) `50^(@)C` Solution :ACCORDING to the PRINCIPLE of calorimetry, `2xx4200xx(60-THETA)=(14200+200)(theta-30)RARR theta =50^(@)C`