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The rms speed of the molecules of a gas ...

The rms speed of the molecules of a gas of density 4 kg `m^(-3)` and pressure `1.2 xx 10^5 Nm^(-2)` is :

A

`120 ms^(-1)`

B

`300 ms^(-1)`

C

`600 ms^(-1)`

D

`900 ms^(-1)`

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The correct Answer is:
B
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