Question

A concave lens forms the image of an object kept at

a distance 20 cm in front of it, at a distance 10 cm
on the side of the object. (a) What is the nature of
the image ? (b) Find the focal length of the lens.
Ans.(a) virtual, erect, diminshed (b) 20 cm (negative)​

Answer 1

Answer:

Solution. (a) The image is formed on the same side as the object. Hence, it is a virtual image. Also, since the lens is a concave lens the image will be erect and diminished.

Explanation:

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