Here in the given equation it is given that ,
we know that for polytropic process
4.923=
On taking log both sides
log(4.923)=
0.692n=(n-1)0.602
0.692 n = 0. 602 n - .602
0.09 n= -.602
n= - 6.68 here n is the polytropic exponent
but for real condition polytropic exponent can not be negative
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