Which of the following statement (s) are correct?
I) Heat transfer is by conduction in opaque solids
II) Heat transfer is by conduction and convection in semitransparent solids
III) Heat transfer is by conduction in flowing liquids
IV) Heat transfer is by conduction and radiation in still gases
V) Heat transfer is by convection and radiation in flowing gases
I, IV and VI
I, IV and V
II, IV and VI
II, III and V
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