1.

An electrically heated coil is immersed in a calorimeter containing 360 g of water at\[10{}^\circ C\]. The coil consumes energy at the rate of 90 W. The water equivalent of calorimeter and coil is 40 g. The temperature of water after 10 min is

A. \[4.214{}^\circ C\]      
B. \[42.14{}^\circ C\]
C. \[30{}^\circ C\]           
D. None of these
Answer» C. \[30{}^\circ C\]           


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