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Where should an object be placed from a ...

Where should an object be placed from a convex lens to from an image of the same size ? Can it happen in case of a concave lens ?

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The object has to be placed at a distance `2 f` from the lens. No, it cannot happen in case of a concave lens, as image formed is always smaller in size.
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PRADEEP-RAY OPTICS-Short Answer(b)
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