A motor draws some gas from an adiabatic container of volume 2 liters having a monoatomic gas at a pressure 4 atm. After drawing the gas the pressure in the container reduces to 1 atm. If the motor converts `10%` of the energy contained in the drawn gas and the output of the motor is 10 p joule, then find the value of p.use `(1atm=10^(5)` pascal)

Answer

9

Explanation

Initially internal energy of the gas in the container `=fnRT`
`//2=fPV//2=3PV//2`
`=3xx4xx2//2=12` atm-litre
finall internal energy of the gas in the container
`=3xx1xx2//2=3atm`. Litre
energy of the gas drawn `=9atm-I=900J`
Output of the motor `=10%` of `900=90J`