An object is placed at a distance of \( f / 2 \) from a convex lens. The image will be (A) At on...

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An object is placed at a distance of \( f / 2 \) from a convex lens. The image will be
(A) At one of the foci, virtual and double its size
(B) At \( 3 f / 2 \), real and inverted
(C) At \( 2 f \), virtual and erect
(D) None of these
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