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The rms speed of oxygen molecule in a vessel at particular temperature is 2 1 x 5 1 ⎟ ⎠ ⎞ ⎜ ⎝ ⎛ + ν is the average speed of the molecule. The value of x will be: (take π = 7 22 )

1. 27
2. 8
3. 28
4. 4

Correct answer: 28

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