For what position of an object, a real and diminished image is formed by a concave mirror?

If an object is placed at the focus of a concave mirror, where is the image formed?

If an object is at infinity (very large distance) in front of a concave mirror, where is the image formed?

Copy this figure in your answer book and show the direction of the light ray after reflection:

Draw the following diagram in your answer book and show the formation of image of the object AB with the help of suitable rays :