• question_answer 15) One mole of monoatomic gas is brought from state A to state B. The initial temperature at A is ${{T}_{0}}$ The temperature at B will A)  $3\,{{T}_{0}}$B)  $6\,{{T}_{0}}$C)  $4\,{{T}_{0}}$D)  $9\,{{T}_{0}}$

In process A to C (At constant pressure) So  $V\propto T$ $\frac{{{T}_{C}}}{{{T}_{A}}}=\frac{3{{V}_{0}}}{{{V}_{0}}}$ ${{T}_{C}}=3{{T}_{0}}$ In process C to B (At constant volume) $P\propto T$ $\frac{{{T}_{B}}}{{{T}_{C}}}=\frac{3{{P}_{0}}}{{{P}_{0}}}$ ${{T}_{B}}=3{{T}_{C}}$ so ${{T}_{B}}=3\times 3{{T}_{0}}=9{{T}_{0}}$