A Camera Is Used to Photograph the Full Moon,which Has

question 55

Multiple Choice

A camera is used to photograph the full moon,which has an angular diameter of 0.53°.The image on the film is 2.3 mm in diameter.What is the focal length of the lens?

• A)2.3 mm
• B)500 mm
• C)250 mm
• D)790 mm
• E)​25.5 mm

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