The owner of a van installs a rear-window lens that has a focal length of -0.310 m. When the owner looks out through the lens at an object located directly behind the van, the object appears to be 0.260 m from the back of the van, and appears to be 0.320 m tall. (a) How far from the van is the object actually located, and (b) how tall is the object? Rear-window lens Person (a) Number i 1.225 Units m Image of person