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JEE Main20257 Apr 2025Evening ShiftPhysicsKinetic Theory of GasesActual

The helium and argon are put in the flask at the same room temperature ( 300 K). The ratio of average kinetic energies (per molecule) of helium and argon is : (Give : Molar mass of helium =4 ~g / mol , Molar mass of argon =40 ~g / mol )

Options

  1. A1: 10
  2. B10: 1
  3. C1: 10
  4. D1: 1

Correct answer

D. 1: 1

Step-by-step solution

K. E= f 2 K T For He and Ar f =3 K E _ He ~K E _ Ar = 1 1

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