Question:medium

The molecules of a given mass of a gas have r.m.s. velocity of 200m s⁻1 at 27^∘C and 1.0×10⁵N m⁻2 pressure. When the temperature and pressure of the gas are respectively 127^∘C and 0.05×10⁵N m⁻2, the r.m.s. velocity of its molecules in m s⁻1 is:

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For a given gas, r.m.s. speed depends only on absolute temperature: vᵣms ∝ √(T) Pressure changes do not affect molecular speed.
Updated On: Mar 19, 2026
  • \(100\sqrt{2}\)
  • \(\dfrac{400}{\sqrt{3}}\)
  • \(\dfrac{100\sqrt{2}}{3}\)
  • (100)/(3)
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The Correct Option is B

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