1 kg of water is heated from 40 C to 70 C, If its volume remains constant, then the change in internal energy is (specific heat of water = 4148 Jkg−1K−1)
A
2.44×105J
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B
1.62×105J
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C
1.24×105J
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D
2.62×105J
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Solution
The correct option is C1.24×105J Since volume does not change as the energy supplied is used to change the internal energy.