Things always look small on viewing through a lens. What is the nature of the lens?

Things always look small on viewing through a lens, then the nature of the lens will be concave because only a concave lens forms a small or diminished image at all times.

Explanation

Diverging Lens or Concave Lens $-$ It is a lens that possesses at least one surface that curves inwards in the middle. In other words, it is thin across the middle and thick at the upper and lower edges, because of which the light that enters the lens, gets spread out, or diverges, which results in forming a smaller image. Due to this effect, it is also called a negative lens or a diverging lens.

The image formed by a concave lens is always virtual, erect, and diminished, regardless of the position of the object. 

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Updated on: 10-Oct-2022

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