In the following experimental set-up
as shown in figure, equal volumes of
boiling water were poured into the
containers P and Q. The temperatures
of both containers and contents were the
same. After an hour the temperature of
container P was found to be lower than
that of container Q. This shows that P is
a better ___________.
A Conductor and radiator
B Radiator only
C Absorber only
D Conductor only