JEE Main 2025 Physics question

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 :

• (1)Both (A) and (R) are true and (R) is the correct explanation of (A)
• (2)(A) is true but (R) is false
• (3)(A) is false but (R) is trueCorrect
• (4)Both (A) and (R) are true but (R) is NOT the correct explanation of (A)