The temperature of a sample of a gas is raised from `127^(@)C` to `527^(@)C` .The average kinetic energy of the gas

If the temperature of a gas is increased from 0^(@)C to 273^(@)C , then the ratio of average kinetic energy of the gas molecules is

When a sample of an ideal gas is heated from 25^(@)C to 50^(@)C the average kinetic energy of the molecules increases. Which ratio gives the correct relationship between the average kinetic energies at the higher temperature to the lower temperature?

The temperature of the gas is raised from 27^(@)C to 927^(@)C , the root mean square velocity is