Option 2 : inverted and enlarged
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10 Questions 10 Marks 8 Mins
The correct answer is inverted and enlarged.
Concept:
Convex lens:
- A convex lens is thicker at the center than at the edges.
- It is called a converging lens because the rays of light that pass through it are brought closer together (they converge).
- When parallel rays of light pass through a convex lens the refracted rays converge at one point called the principal focus.
- The distance between the principal focus and the center of the lens is called the focal length.
- A double convex lens has two foci F1 and F2 and two centers of curvature 2F1 and 2F2.
Explanation:
When the object is between F1 and 2F1:
An enlarged, real and inverted image is formed beyond the center of curvature, 2F2 when an object is placed between the center of curvature, 2F1, and principal focus, F1 of a convex lens.
Additional Information All six cases of image formation by the convex lens:
| Object position | Image position | Nature of image | Size of image |
| At infinity | At F2 | Real and inverted | Point sized |
| Beyond 2F1 | Between F2 and 2F2 | Real and inverted | Diminished |
| At 2F1 | At 2F1 | Real and inverted | Same size |
| Between F1 and 2F1 | Beyond 2F2 | Real and inverted | Magnified |
| At F1 | At infinity | Real and inverted | Highly magnified |
| Between F1 and O | on the same side of the object | Virtual and erect | Magnified |
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