The following three objects $(1)$ a metal tray, $(2)$ a block of wood and $(3)$ a woolen cap are left in a closed room overnight. Next day, the temperature of each is recorded as $T_1, T_2$ and $T_3$, respectively. The likely situation is
KVPY 2011, Medium
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(a)
Most likely each of the object is in thermal equilibrium with its surroundings. So, $T_1=T_2=T_3$.
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