Name the spherical mirror(s) that has/have

i) Virtual principal focus

ii) Real principal focus

A coin in a glass beaker appears to rise as the beaker is slowly filled with water, why?

Name the mirror(s) that can give (i) an erect and enlarged image, (ii) same sized, inverted image?

If an object is placed at the focus 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