The owner of a van installs a rear-window lens that has a, Ask an Expert

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The owner of a van installs a rear-window lens that has a focal length of -0.301 meter. When the owner looks out through the lens at a person standing directly behind the van, the person appears to be just 0.239 meter from the back of the van, and appears to be 0.342 meter tall.

(a) Determine how far from the van is the person actually standing?

(b) Determine how tall is the person?

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