What is the focal length of a lens?
A.
the distance between the object and the image
B...
What is the focal length of a lens?
A.
the distance between the object and the image
B.
distance between the object and the center of the lens
C.
the distance between the center of the lens and the image
D.
the distance between the focal point and the center of the lens
Answers: 2
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