For an adiabatic change, the first law of
thermodynamics may be expressed as
dU + PdV = 0
or PdV=-dU …(i)
During expansion, dV is + ve. Therefore the equation (i) will hold, if dU is - ve, i.e., temperature decreases.
For an adiabatic change, the first law of
thermodynamics may be expressed as
dU + PdV = 0
or PdV=-dU …(i)
During expansion, dV is + ve. Therefore the equation (i) will hold, if dU is - ve, i.e., temperature decreases.