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The rms speed of helium at 27 ^oC and 1 atm pressure is $900 m s^{- 1}$ . Then the rms speed of the helium molecules at 27 ^oC and 2 atm pressure is

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450 ms−1

1800 ms−1

900 ms−1

750 ms−1

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detailed solution

Correct option is C

vRMS=3RTM . At constant temperature, velocity is independent of pressure.

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The rms speed of helium at 27 oC and 1 atm pressure is 900 ms−1. Then the rms speed of the helium molecules at 27 oC and 2 atm pressure is

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Ready to Test Your Skills?

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The rms speed of helium at 27 ^oC and 1 atm pressure is $900 m s^{- 1}$ . Then the rms speed of the helium molecules at 27 ^oC and 2 atm pressure is