Question

State the position , nature and size of an image when object is placed at distance equal to its focal length​

Answer 1

Explanation:

when the object is placed in a distance equal to focal length, the image will be formed at infinity.

it will be real and inverted, and will be a highly diminished image.

Answer 2

Answer:

see that

Explanation:

The image distance depends on both the object distance and the focal length of the lens. The focal length of the lens is a characteristic of the lens itself and doesn't change as the object and image distances change. The focal length is equal to the image distance when the object is very, very distant (e.g. a star)