AP EAMCET · PHYSICS · Thermodynamics
There is no change in internal energy of an ideal gas when it undergoes
- A isothermal expansion
- B adiabatic expansion
- C free expansion
- D isobaric expansion
Answer & Solution
Correct Answer
(C) free expansion
Step-by-step Solution
Detailed explanation
In free expansion, the ideal gas is allowed to expand into a vacuum. This happens quickly, so there is no heat transferred. No work is done, because the gas does not displace anything. According to first law of thermodynamics, this means that \(\Delta E_{\text {internal }}=0\)…
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