At what distance from a convex lens should an object be placed to get an image of the same size as that of…

At what distance from a convex lens should an object be placed to get an image of the same size as that of the object on a screen ?
  1. Beyond twice the focal length of the lens.
  2. At the principal focus of the lens.
  3. At twice the focal length of the lens.
  4. Between the optical centre of the lens and its principal focus.

Solution

At twice the focal length of the lens

Asked in: CBSE

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