When an object is placed between the principal focus $(F)$ and the pole $(P)$ of a concave mirror,what kind of image is formed?

If the radius of curvature of a spherical mirror is $30 \ cm$,what is its focal length (in $cm$)?

Which of the following conditions must be satisfied to obtain a magnified image of an object using a concave mirror?

What is the focal length of a plane mirror?

$(a)$ What should be the position of the object,when a concave mirror is to be used $(i)$ as a shaving mirror,and $(ii)$ in torches producing a parallel beam of light? $(b)$ $A$ man standing in front of a mirror finds his image having a very small head and legs of normal size. What type of mirror is used in designing such a mirror?

$A$ full-length image of a distant tall building can definitely be seen by using: