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प्रश्न
Distinguish between a concave lens and a convex lens by looking at the image through them.
अंतर स्पष्ट करें
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उत्तर
| Position of object | Convex lens | Concave lens |
| When held close | The image is magnified (larger) and erect. | The image is diminished (smaller) and erect. |
| When moved away | The image becomes inverted (upsidedown). | The image remains erect but becomes smaller. |
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