An air-conditioning unit is installed in a room to cool the air.
Where should the air-conditioning unit be placed to cool the entire room as effectively as possible?
near the floor
near the ceiling
on the wall at mid-height
at the bottom corner of the room
73 exam-style questions on CIE IGCSE Physics 2.3.2 Convection. Each one has a worked solution and a mark scheme showing where the marks go.