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  4. What happens to the internal energy of a gas during isothermal expansion?

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Q. What happens to the internal energy of a gas during isothermal expansion?

Jharkhand CECEJharkhand CECE 2003

Solution:

For a process to be isothermal, any heat flow into or out of the system must occur slowly enough, so that thermal equilibrium is maintained. Hence, in a isothermal process, temperature during the whole process does not change i.e., internal energy which is a function of temperature remains same throughout the process.