Questions
A lens forms a virtual, diminished image of an object placed at 2 m from it. The size of image is half of the object. Which one of the following statements is correct regarding the nature and focal length of the lens?
detailed solution
Correct option is C
m=ff+u,12=ff−2 or2f=f−2 or f=−2 metref=2 metreSince the image is virtual as well as diminished therefore the lens is concave.Talk to our academic expert!
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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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