Question

When the midpoint of the face of the Sun appears to be on the horizon, where...

When the midpoint of the face of the Sun appears to be on the horizon, where is the actual midpoint from the point of view of the observer?

above the horizon

on the horizon

above the horizon at sunrise and below the horizon at sunset

below the horizon

due to refraction from the atmosphere,sun appears to be at the horizon ,however it is below the horizon

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