Reflection of Light from a spherical mirrors

concave mirror

reflective surface caves in at the centre

convex mirror

the reacting surfaces bulges out at the centre

real image

is an image formed by actual intersection of light rays, located on a screen or by method of no parallax

image for a concave mirror

if the object is outside the focus the image is real and located in front of the mirror

if the object is inside or at the focus the image is virtual and located behind the mirror

image for a convex mirror

the image is always virtual and located behind the mirror

the image is always diminished. the nearer the object is to the mirror the bigger the image

real image

an image formed by the actual intersection of light rays

virtual image

an image formed by the apparent intersection of rays. It cannnot be located on a screen and it’s upright