Questions
A lens forms a diminished and erect image of an object. The magnification is 1 / 4. Then the ratio of object distance to focal length is
detailed solution
Correct option is D
(4)Since the image is diminished and erect, the lens must be a concave lens.Now vu=14 ⇒ v=u4∴ General lens formula is 1v−1u=1f∴ 1−u/4 −1−u − 1−f⇒ −3u=−1f ⇒ uf=3Talk to our academic expert!
Similar Questions
Image of the sun is formed by a binconvex lens of focal length f. The image is a circular patch of radius r and is formed on the focal plane of the lens. Choose the correct statement from the following
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