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