The correct option is Virtual, erect, and diminished
Explanation
A concave lens is a diverging lens. Unlike a convex lens, which can form both real and virtual images depending on the object's position, a concave lens possesses specific image formation characteristics governed by the divergence of light rays after refraction.
Analysis of Image Formation:
- Virtual: When light rays parallel to the principal axis strike a concave lens, they diverge. These rays do not physically meet on the other side of the lens. Instead, they appear to converge at the principal focus on the same side as the object when extended backward. Consequently, the image formed is always virtual.
- Erect: Since the image is formed by the apparent intersection of rays above the principal axis (on the same side as the object), the orientation remains upright. Therefore, the image is always erect.
- Diminished: The image formed by a concave lens is always located between the optical center and the focus. Geometrically, the height of this image is invariably smaller than the height of the object. Thus, the image is always diminished.
Key Takeaway:
Irrespective of the object's position relative to the lens, a concave lens always produces an image that is virtual, erect, and diminished.