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BITSAT2021PhysicsKinetic Theory of GasesActual

The temperature of an ideal gas is increased from 120 ~K to 480 ~K . If at 120 ~K , the root mean square velocity of the gas molecules is v , at 480 ~K it becomes

Options

  1. A4 u
  2. B2 u
  3. Cu 2
  4. Du 4

Correct answer

B. 2 u

Step-by-step solution

( v ₁ v ₂ = 3 RT ₁ M 3 RT ₂ M = T ₁ ~T ₂ v ₂=2 v ₁ )

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