Question

An object lies at a distance of 2f from a concave lens of focal length f. Draw a ray-diagram to illustrate the image formation.

Answer 1

Explanation:

In this, the object lies at a distance of 2f i.e., C, the center of curvature of the lens from a concave lens of focal length, f. Then, the image formed after passing through the lens is between the focal length and the optical center (O) of the lens, left side of the lens. The image formed is erect and diminished as well as virtual in nature. The above diagram illustrates the image formed by the concave lens when the object is at the center of curvature.

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Answer 2

Answer:

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Explanation:

The object lies at a distance of 2f is a C the centre of curvature of the lens from a concave lens of focal length f then, the image formed after passing through the lens is b/w tehe focal length and the optical center (o) of the lens left side of the lens.The image formed is erect and diminished as well as virtual in nature.

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