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Question
An object is placed at a distance 2f from a convex lens of focal length f. The size of the image formed is ______ that of the object.
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Solution
An object is placed at a distance 2f from a convex lens of focal length f. The size of the image formed is equal to that of the object.
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Complete the following table based on image formation by convex lens:
| Position of Object | Position of Image | Nature of Image |
| At infinity | (a) ______ | Real and inverted and highly diminished image |
| Beyond 2F1 | (b) ______ | (c) ______ |
| At 2F1 | (d) ______ | Real, inverted, same size (as object) image |
| Between F1 and 2F1 | Beyond 2F2 | (e) ______ |
| At focus F1 | (f) ______ | Real, inverted and highly enlarged image |
