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Per NCERT §5.1.4, the INTERNAL ENERGY U of a system is classified as which kind of property?
AAlways zero
BA state function — ΔU depends only on initial + final state, not on path
CEqual to entropy
DA path function (depends on route)
Answer & Solution
Correct answer: B. A state function — ΔU depends only on initial + final state, not on path
Per NCERT §5.1.4, U is a state function. ΔU = w_ad (adiabatic) shown by Joule. q and w individually are path-dependent.
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