JEE Main 2022 — Thermodynamics Question with Solution
JEE Main 2022 (26 Jun Shift 1)
Question
A thermally insulated vessel contains an ideal gas of molecular mass and ratio of specific heats . Vessel is moving with speed and is suddenly brought to rest. Assuming no heat is lost to the surrounding and vessel temperature of the gas increases by :
( universal gas constant)
( universal gas constant)
Choose an option
Show full solutionCorrect option: B
Correct answer
B
Step-by-step explanation
KE of the vessel
When the vessel is suddenly stopped, the ordered motion of the gas molecules is converted into disordered motion of the molecules increasing thereby the internal energy of the gas. Thus,
Where is number of moles of the gas in the vessel and is molecular weight of the gas.
As
When the vessel is suddenly stopped, the ordered motion of the gas molecules is converted into disordered motion of the molecules increasing thereby the internal energy of the gas. Thus,
Where is number of moles of the gas in the vessel and is molecular weight of the gas.
As
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This is a previous-year question from JEE Main 2022, 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.