The temperature at which the average speed of perfect gas molecules is double than at `17^(@)C` is

The temperature at which the average speed of the gas molecules is double to that at a temperature of 27^(@)C is

The temperature at which the average speed of the gas molecules is double to that at a temperature of 27^(@)C is

The rms speed of the perfect gas molecules is doubled if.

The average speed of gas molecules is equal to

The temperature at which the rms speed of air molecules is double of that at STP is

The temperature at which the r.m.s. velocity of gas molecules is doubled than that at 27^(@)C is :

The average speed of gas molecules is equal to :

The temperature at which the average speed of oxygen molecules is double that of the same molecules at 0^@C is

At what temperature, the average speed of gas molecules be double of that at temperature, 27^(@)C ?