A convex lens is said to …
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Yogita Ingle 6 years, 10 months ago
In a convex lens, the parallel rays of light passing through the lens actually meet at the focus in front of the lens. This is why it is called real focus. But in a concave lens, the rays of light passing through the lens diverge and when these diverging rays are produced backward, they appear to meet at a point behind the lens. This point is the focus of the lens. Because the light rays do not actually meet at the focus, it is called virtual or imaginary focus.
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