No matter where an object is placed in front of it, a concave lens always forms an image that is:

Question

Prepp Team · Accepted Answer

Concave Lens Always Forms Virtual, Erect, Diminished Image

A concave lens is a diverging lens. Its primary characteristic is that it spreads out light rays that pass through it.

When light rays from an object pass through a concave lens, they diverge.
To form an image, these diverging rays are traced back. They appear to originate from a point on the same side of the lens as the object.
This point of origin forms the image, which is always virtual (cannot be projected onto a screen) because the rays do not actually converge there.
Furthermore, irrespective of the object's position (whether at infinity or between the optical center and infinity), the image formed by a concave lens is consistently erect (upright, same orientation as the object) and diminished (smaller than the object).

Let's analyze the options based on these properties:

Option 1: Real, inverted, and enlarged - Incorrect. Concave lenses form virtual images, not real ones.
Option 2: Virtual, erect, and diminished - Correct. This accurately describes the image formed by a concave lens for any object position.
Option 3: Real, erect, and same size - Incorrect. Concave lenses form virtual images and typically diminished ones, not real images of the same size.
Option 4: Virtual, inverted, and enlarged - Incorrect. While the image is virtual, it is always erect, not inverted.

Therefore, a concave lens always forms a virtual, erect, and diminished image.

Prepp Team · Answer

Real, inverted, and enlarged

Prepp Team · Answer

Real, erect, and same size

Prepp Team · Answer

Virtual, inverted, and enlarged