Answer :

Explanation:

There are two types of lens. They are as follows:

  1. Concave lens
  2. Convex lens

Converging lens is also known as a convex lens. The image formed by a convex lens is real and inverted. When the object is placed between the focus F₁ and the optical center O, the formed image is virtual and erect.

A concave lens is also called as a diverging lens. The image formed by a concave lens is virtual and erect always.

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