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The secret is that after refraction through convex lens if the refracted rays converge then it would form a REAL image and if the rays are diverging then it would form a VIRTUALimage.

  • So, when the object is at or beyond the focus (F) of the convex lens then we have only converging refracted rays, hence real image
  • If the object lies in between focus (F) and optical centre (O) of the lens, then refracted rays come out diverging and so only virtual images are formed.
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Can plane and convex mirrors produce real image?

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