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A 2.26 cm tall object is placed in 18.6 cm in front of a convex lens. The focal length is 35.8 cm. How far is the image from the lens?
Question
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Answers ( )
Answer:
the image is -38.7 cm from the lens
Explanation:
We use the lens equation which says
where is the distance to the object, is the distance to the image, and is the focal length.
Now, in our case
,
,
;
therefore,
where the negative sign indicates that the image is virtual and on the same side of the lens as the object.