Single Choice

It is hotter at the same distance over the top of a fire than it is on the side of it mainly because:

AHeat is radiated upwards
BAir conducts heat upwards
CConvection takes more heat upwards
Correct Answer
DConduction, convection and radiation all contribute significantly in transferring heat upwards.

Solution

As we know that heat currents in convection process always move upwards not sidewards; so heat intensity in this process is more in upperside.


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