How do you tell if an image is upright or inverted?
Why Do Magnifying Glasses Flip Images?
File:Convex lens (magnifying glass) and upside-down image.jpg - Wikipedia
Depicts convex lens, that is, when the object is at a long distance from the lens, the image formed is smaller than the object, and inverted, vintage Stock Vector Image & Art -
Does the convex lens have an upright or upside down image? - Quora
optics - Why are objects far away inverted through a lens but not through the viewfinder? - Photography Stack Exchange
optics - Why are objects far away inverted through a lens but not through the viewfinder? - Photography Stack Exchange