In four experiments, blocks A and B , starting at different initial temperatures, were brought in contact in an insulating box and allowed to reach a common final temperature. The entropy changes for

Question

In four experiments, blocks A and B , starting at different initial temperatures, were brought in contact in an insulating box and allowed to reach a common final temperature. The entropy changes for the blocks in the four experiments had the following values (in joules per kelvin), but not necessarily in the order given. Determine which values for A can go with which values for B .

TestHub · Accepted Answer

Δ S t o t a l ​ = Δ S A ​ + Δ S B ​ ≥ 0 Δ S t o t a l ​ > 0 Δ S A ​ > ∣Δ S B ​ ∣ ​ P : Q : R : S : ​ 8 > 5 ⇒ P → ( − 5 ) 5 > 3 ⇒ Q → ( − 3 ) 3 > 2 ⇒ R → ( − 2 ) 9 > 8 ⇒ S → ( − 8 ) ​

Physics - Heat & Thermo Question with Solution | TestHub

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JEE Advanced 2026