An ideal gas goes through a polytropic process. Find the polytropic exponent n if in this process the coefficient
(a) of diffusion;
(b) of viscosity;
(c) of heat conductivity *** constant.
Thus D *** constant in the process pV3 = constant So polytropic index n = 3
So η *** constant in the isothermal process
pV = constant, n = 1, here
(c) Heat conductivity k = ηCv and Cv is a constant for the ideal gas
Thus n = 1 here also,
