# In P - V graph

$(a)\;T_{1}=T_{2}\qquad(b)\;T_{1} > T_{2}\qquad(c)\;T_{1} < T_{2}\qquad(d)\;Temperature\;first\;decreases\;and\;then\;increases$

Answer : $\;Temperature\;first\;decreases\;and\;then\;increases$
Explanation :
Temperature first decreases and then increases