The ratio of rms speed of an ideal gas molecules at pressure p to that at pressure 2p is

The rms speed of helium gas at 27^(@)C and 1 atm pressure is 900 ms^(-1) . Then the rms speed of helium molecules at temperature 27^(@)C and 2 atm pressure is

The rms speed of helium gas at 27^(@)C and 1 atm pressure is 1100 ms^(-1) . Then the rms speed of helium molecules at temperature 27^(@)C and 2 atm pressure is

The isothermal Bulk modulus of an ideal gas at pressure P is

The isothermal Bulk modulus of an ideal gas at pressure P is

If the rms speed of gas molecules is x cm s^(-1) at a pressure of p atmospheres, then the rms speed at a pressure of 2p atmospheres and constant temperature will be