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Transcribed Image Text:Two rooms in the top floor of a
building are heated by the same
heating system such that an internal
temperature of +22 oC is maintained
during a cold night when the ambient
air temperature is -18 oC. The external
surface temperature of the roof of
room A was measured at +1 oC whilst
that for room B was -1 oC. Which of
the following applies?
(A) Both roofs are equally well
insulated.
(B) Roof of room A is better insulated.
(C) Roof of room B is better insulated.
(D) It is not possible to determine
which is better insulated
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