Thermodynamics Question 47
Question: A gas is suddenly compressed to one fourth of its original volume. What will be its final pressure, if its initial pressure is P
[Pb. PET 2002]
Options:
A) $ \Delta U=-W $ in an adiabatic process
B) $ \Delta U=W $ in an isothermal process
C) $ \Delta U=-W $ in an isothermal process
D) $ \Delta U=W $ in an adiabatic process
Show Answer
Answer:
Correct Answer: A
Solution:
According to the first law of thermodynamics $ \Delta Q=\Delta U+\Delta W $ In adiabatic process $ \Delta Q=0 $ , hence $ dU=-dW $
