JEE Main 2026 Physics question
If 2 mole of an ideal monoatomic gas at temperature T, is mixed with 6 mole of another ideal monoatomic gas at temperature 2T then the temperature of mixture is:
Answer: (D)
Solution
No heat is exchanged with the surroundings and both gases have the same per mole, so =(n₁T₁+n₂T₂)/(n₁+n₂)=(2T+12T)/8=7T/4.