How Far from a +50-Mm Focal Length Lens,such as Is

question 86

Multiple Choice

How far from a +50-mm focal length lens,such as is used in many 35-mm cameras,must an object be placed so it will form a real image that is 3.0 times the size of the object?

• A)46 mm
• B)52 mm
• C)58 mm
• D)67 mm

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