The image formed by a convex lens is observed to be virtual, erect and larger than the object. Where should be the position of the object?

The correct answer is between focus F1 and optical center O.

Key Points

• The image formed by a convex lens is virtual, erect, and larger than the object when the object is placed between the focus (F1) and the optical center (O) of the lens.
• In this position, the light rays diverge after passing through the lens and appear to come from a point on the same side as the object, forming a virtual image.
• The virtual image produced is erect (upright) and magnified compared to the object.
• This scenario is typical for applications like magnifying glasses, where a larger virtual image is required.

Additional Information

• Convex Lens
  • A convex lens is thicker at the center than at the edges.
  • It converges light rays that pass through it, focusing them to a point known as the focal point (F1).
  • Convex lenses are also known as converging lenses.
• Virtual Image
  • A virtual image cannot be projected on a screen as it forms on the same side as the object.
  • It is formed by the apparent divergence of rays from a common point.
• Optical Center (O)
  • The optical center is a point on the lens through which light passes without being refracted.
  • It is the geometrical center of the lens.
• Magnification
  • Magnification refers to the process of enlarging the appearance of an object through optical instruments.
  • In lenses, magnification is determined by the ratio of the image distance to the object distance.