JEE Main 2026 — Thermodynamics Question with Solution
JEE Main 2026 (24 January Shift 1)
Question
Density of water at and are and respectively. The increase in internal energy of 4 kg of water when it is heated from to is J.
(specific heat capacity of water . and 1 atmospheric pressure )
(specific heat capacity of water . and 1 atmospheric pressure )
Choose an option
Show full solutionCorrect option: D
Correct answer
D268799.2
Step-by-step explanation
Heat absorbed by water: J.
Volume change: m³ at 4°C, m³ at 20°C.
Work done by water at constant pressure: J.
By first law of thermodynamics: J
Volume change: m³ at 4°C, m³ at 20°C.
Work done by water at constant pressure: J.
By first law of thermodynamics: J
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