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Question
Distinguish between a convex lens and concave lens. Which of the two is a converging lens : convex lens of concave lens?
Solution
| Convex Lens | Concave Lens |
| 1.A convex lens converges or concentrates the light rays to a point. | 1. A concave lens diverges the rays passing through it. |
| 2.A convex lens has a real focus. | 2.A concave lens has a virtual focus. |
| 3.A convex lens has a positive focal length. | 3.A concave lens has a negative focal length. |
A convex lens is a converging lens .
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