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The focal length of a concave lens is 20 cm. If an object is placed at a distance of 50 cm in front of this concave lens, where is the image formed? What is the nature of the image? |
| Answer» The focal length of a concave lens is 20 cm. If an object is placed at a distance of 50 cm in front of this concave lens, where is the image formed? What is the nature of the image? | |