JEE Main 2026 — Thermodynamics Question with Solution
JEE Main 2026 (21 January Shift 1)
Question
10 mole of oxygen is heated at constant volume from to . The change in the internal energy of the gas is cal. (The molecular specific heat of oxygen at constant pressure, and .)
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Show full solutionCorrect answer: 500
Correct answer
500
Step-by-step explanation
Given: mol,
,
cal/mol·°C,
cal/mol·°C
For ideal gas: cal/mol·°C
Change in internal energy: cal
,
cal/mol·°C,
cal/mol·°C
For ideal gas: cal/mol·°C
Change in internal energy: cal
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This is a previous-year question from JEE Main 2026, covering the Thermodynamics chapter of Physics. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.