Physics · Thermodynamics
JEE Main 2025 — 24 January, Evening Shift — Question 52
Given below are two statements. One is labelled as Assertion (A) and the other is labelled as Reason(R). Assertion (A) : In an insulated container, a gas is adiabatically shrunk to half of its initial volume. The temperature of the gas decreases.
Reason (R): Free expansion of an ideal gas is an irreversible and an adiabatic process.
In the light of the above statement, choose the correct answer from the options given below :
- Option A:
Both (A) and (R) are true and ( R ) is the correct explanation of (A)
- Option B:
(A) is true but (R) is false
- Option C:Correct
(A) is false but ( R ) is true
- Option D:
Both (A) and (R) are true but (R) is NOT the correct explanation of (A)
Answer: C
Step-by-step solution
A)
Temp increases
R) Free expansion is assumed fast, so Adiabatic
Answer key and solution verified before publishing.
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- Exam
- JEE Main 2025
- Subject
- Physics
- Chapter
- Thermodynamics
- Topic
- Different Thermodynamic Processes