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Thermodynamics question for JEE Main (AIEEE 2011), with solution

Q 11-11-017JEE MainAIEEE 2011Easy

$100$ 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 $4184$ J/kg K)

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