The image of the coin in the figure is magnified by a factor of M = 3.5 times, and is a distance d = 6.2 cm from the lens. What is the focal length (in cm) of the lens?
Added by Dennis W.
Step 1
5 and the image distance is -21.7 cm, we can use the formula for magnification (M = -v/u) to find the object distance (u). Show more…
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