A Simple Digital Camera Lens with Focal Length $f _ { 0 } = 3.00 \mathrm {~cm}$

question 76

Multiple Choice

A simple digital camera lens with focal length $f _ { 0 } = 3.00 \mathrm {~cm}$ perfectly focuses the image of an object on a CCD sensor located a distance $14.00 \mathrm {~cm}$ away from the lens. The object now moves away from the lens and the new distance between the lens and sensor is 13.00 ${~cm}$
(a) By what amount did the object change its distance from the lens? (b) What is the new magnification?

• A) (a) 0.08 cm (b) 3.33
• B) (a) 0.03 cm (b) 0.30
• C) (a) 990.00 cm (b) 0.23
• D) (a) 12.22 cm (b) 4.33

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