Calculate the position of the image of an object when placed at
(a) focus of a convex lens.
(b) focus of a concave lens.

Calculate the position of the image of an object when placed at (a) focus of a convex lens. (b) focus of a convex lens.

The size of the image of an object placed at the focus of a concave mirror is ………….. .

Principal focus of convex lens:

Principal focus of convex lens:

The nature and size of an object placed focus F_(1) of a convex lens is :

If an object is placed at the focus of a convex lens, where is the image formed?

Principal focus of concave lens:

Principal focus of concave lens:

Descibe with the help of a ray diagram the nature, size and position of the image formed when an object is placed in front of a convex lens between focus and optical center. State three characteristics of the image formed.