TS EAMCET 7 May 2018 Shift 1 Solved Paper

A diesel engine has a compression ratio of 20 : 1. If the initial pressure is 1 × 105 Pa and the initial volume of the cylinder is 1 × 10−3m3 , how much work does the gas do during the compression? (Assume the process as adiabatic)
(Cv = 20.8 J/mol K , γair = 1.4 , (20)1.4 = 66.3)