When a convex lens forms a real image of an object, what is the minimum possible distance between the object and its image?

Please wait…

1. When a convex lens forms a real image of an object, what is the minimum possible distance between the object and its image?

Equal to the lens’s focal length

Twice the lens’s focal length

Four times the lens’s focal length

Half the lens’s focal length

 Loading…

 

The object-to-image distance for a real image is smallest, at exactly four times the focal length, specifically when the object sits at twice the focal length from the lens.