Question:
If the heat supplied to an ideal gas is used up entirely to do work on the surrounding, then the process is called
If the heat supplied to an ideal gas is used up entirely to do work on the surrounding, then the process is called
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In isothermal expansion of ideal gas, \(\Delta U = 0\), so \(Q = W\).
Updated On: Apr 24, 2026
- isothermal expansion
- isothermal compression
- adiabatic compression
- isobaric compression
- isobaric expansion
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The Correct Option is A
Solution and Explanation
Step 1: Understanding the Concept:
First law of thermodynamics: \(\Delta Q = \Delta U + \Delta W\). If all heat is used for work, \(\Delta U = 0\).
Step 2: Detailed Explanation:
\(\Delta U = 0\) implies temperature constant (isothermal process).
Work done by gas = heat supplied, so gas expands.
Thus, isothermal expansion.
Step 3: Final Answer:
The process is isothermal expansion.
First law of thermodynamics: \(\Delta Q = \Delta U + \Delta W\). If all heat is used for work, \(\Delta U = 0\).
Step 2: Detailed Explanation:
\(\Delta U = 0\) implies temperature constant (isothermal process).
Work done by gas = heat supplied, so gas expands.
Thus, isothermal expansion.
Step 3: Final Answer:
The process is isothermal expansion.
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