Verified Solution • 2025–26 Session moderate

QJEEM20Ph6f96: JEE Main 2020 Physics - Class 11 JEEM20Ph6f96 Solution: A gas mixture consists of 3 moles of oxygen and 5 moles of…

A gas mixture consists of 3 moles of oxygen and 5 moles of argon at temperature T. Assuming the gases to be ideal and the oxygen bond to be rigid, the total internal energy (in units of RT) of the mixture is :

Multiple Choice Options

  • A 11
  • B 20
  • C 15
  • D 13

Step-by-Step Verified Solution

U =f12n1RT+f22n2RT

=52(3RT)+32×5RT

∴ U =15RT

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