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Distinguish between b. Concave lens and Convex Lens
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Concave lens Convex lens
It is a diverging lens because it diverges the rays falling on it. It is a converging lens because it converges the rays falling on it.
It is thin at the center and bulged at the edge. It is thin at the edge and bulged at the centre.
The image formed by concave lens is always diminished and virtual. The image formed by convex lens can be real as well as virtual. Also, the image formed can be diminished as well as magnified.
It has a virtual focus. It has a real focus.


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