Image Formation by Spherical Mirror: Concave Mirror

CBSE Class 10 Physics Chapter 10: Light – Reflection and Refraction.
How are the images formed by the concave mirror?
How can we locate the image formed by a concave mirror for different positions of the object?
Are the images real or virtual?
Are they enlarged, diminished or have the same size?
This is demonstrated with the help of an activity with the help of a screen and candle flame.