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  • Question : Reversible Process and Change in Internal Energy A gas undergoes a reversible isothermal compression from an initial volume of <img alt="\mathrm{0.04\; m^{3}}"

Question : Reversible Process and Change in Internal Energy

A gas undergoes a reversible isothermal compression from an initial volume of \mathrm{0.04\; m^{3}} to a final volume of \mathrm{0.02\; m^{3}}at a temperature of 400 K. If 500 J of heat is released to the surroundings during the process, calculate the change in internal energy of the gas.

Option: 1

-500 J


Option: 2

700 J


Option: 3

200 J


Option: 4

220 J


Answers (1)

best_answer

For a reversible isothermal process, the change in internal energy (?U) is given by:

\mathrm{\Delta U=Q}

Given:

Q = −500 J (negative because heat is released)

The change in internal energy is equal to the heat released:

\mathrm{\Delta U=Q=-500 \mathrm{~J}}

Therefore, the correct option is A.

Posted by

SANGALDEEP SINGH

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