Questions
A lens forms a real image of an object. The distance from the object to the lens is x cm and that from the lens to the image is y cm. the graph (Fig.) shows the variation of y with x.
It can be deduced that the lens is
detailed solution
Correct option is A
A diverging lens if ruled out because both x and y are positive values. Both x and y equal 20 cm at their smallest sum, which occurs whenx + y = 40 cm = 4 f ∴ f = 10 cmThis indicates a converging lens of focal length = 10 cmTalk 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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