The Image Area on 35 Mm Film Is 24 Mm

question 1

Multiple Choice

The image area on 35 mm film is 24 mm × 36 mm. What focal length lens of the following will allow an image of the moon, 0.50° in angular size, to just fit on the film?

• A) 2.8 m
• B) 1.4 m
• C) 0.85 m
• D) 12 mm
• E) 55 mm

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