The change in the internal energy of the gas during the process is 25 J.
Explanation:
In an adiabatic process, no heat is gained or lost by the system. According to the first law of thermodynamics,
Q= dU + dW
Here, Q is heat gained or lost by the system,
dU is the change in the internal energy of the system,
dW is the work done,
As the process is adiabatic, Q=0 we get,
dU= ₋ dW = ₋ 25 J
The negative sign shows that there is a decrease in the temperature of the system.
