The root mean square velocity of an idea...

The root mean square velocity of an ideal gas in a closed container of fixed volume is increased from `5xx10^(4)cms^(-1)` to `10xx10^(4)cm s^(-1)`. Which of the following statements correctly explains how the change is accomplished?

By heating the gas, the temperature is doubled

By heating the gas, the pressure is made four times

By heating the gas, the volume is tripled

By heating the gas, the pressure is doubled.

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