An ideal gas (lmanda=1.5) is expanded adiabatically. How many times has the gas to be expanded to reduce the root mean square velocity of molecules 2.0 times

An ideal gas (lmanda=1.5) is expanded adiabatically. How many times ha

1.	An ideal gas (lmanda=1.5) is expanded adiabatically. How many times has the gas to be expanded to reduce the root mean square velocity of molecules 2.0 times
Answer» 4 TIMES 16 times 8 times 2 times Answer :B