MCQ
When one mole of monoatomic ideal gas at $T \,K $ undergoes adiabatic change under a constant external pressure of $1 \,atm$ changes volume from $1$ litre to $2$ litre. The final temperature in Kelvin would be
- A$\frac{T}{{{2^{(2/3)}}}}$
- B$T + $ $\frac{2}{{3 \times 0.0821}}$
- C$T$
- ✓$T - $ $\frac{2}{{3 \times 0.0821}}$