JAMB Physics 2025 Objective — Question 38

Question 38 of 40 from the Joint Admissions and Matriculation Board (JAMB) Physics 2025 Objective paper, with the correct answer and a full explanation.

An ideal gas undergoes isothermal expansion. Which quantity remains constant?

A. internal energyCorrect
B. pressure
C. volume
D. temperature

Explanation

For ideal gas, internal energy depends only on T; isothermal → T constant → U constant.

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