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Question
A convex lens of focal length 20 cm can produce a magnified virtual as well as real image. Is this a correct statement? If yes, where shall the object be placed in each case for obtaining these images?
Solution
In convex lens, when the object is kept between the optical centre and the focus, the virtual, erect and magnified image is formed. The same object, when kept between the focus and the centre of curvature will produce the real, inverted and magnified image. Therefore, the statement is correct. To obtain the magnified virtual as well as real image, the object must be kept between 0 to 20 cm and 20 cm to 40 cm respectively.
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