Thermodynamics Question 17
Question: When a gas expands adiabatically
[CPMT 1990]
Options:
A) The pressure decreases
B) The pressure increases
C) The pressure remains the same
D) The pressure may increase or decrease depending upon the nature of the gas
Show Answer
Answer:
Correct Answer: A
Solution:
Due to compression the temperature of the system increases to a very high value.
This causes the flow of heat from system to the surroundings, thus decreasing the temperature.
This decrease in temperature results in decrease in pressure.
