Q. If gas at constant temperature and pressure expands then its
A) Internal energy increases and then decreases
B) Internal energy increases
C) Internal energy remains the same
D) Internal energy decreases
Explanation
(c)
We know that internal energy of a gas depends upon its pressure and temperature. Thus, if a gas expands at constant temperature and pressure, than its internal energy remains same
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.