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Question
Distinguish between concave and convex lens.
Solution
| Convex lens | Concave lens |
| 1. A convex lens is thicker in the middle and thinner at its edges. | 1. A concave lens is thicker at the edges and thinner in the middle |
| 2. A light beam converges on passing through a convex lens. | 2. A light beam diverges on passing through a concave lens. |
| 3. The convex lens produces a real image that is inverted and is smaller and can be obtained on screen. | 3. A concave lens always forms a virtuall image, the image is magnified and cannot be obtaiined on screen. |
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