JEE Main 2011 Physics question
100 g of water is heated from 30°C to 50°C. Ignoring the slight expansion of the water, the change in its internal energy is (specific heat of water is 4148 J/kg/K ):
Answer: (1)
Solution
With negligible expansion, no work is done: kJ ≈ 8.4 kJ, option (1).