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We get a diminished image with a concave mirror when the object is placed

We get a virtual image in a concave mirror when the object is placed

Which of the following represents Magnification ‘m’ of spherical mirror?

i) $\raisebox{1ex}{$v$}\!\left/ \!\raisebox{-1ex}{$u$}\right.$    ii) $-\raisebox{1ex}{$v$}\!\left/ \!\raisebox{-1ex}{$u$}\right.$    iii) $\raisebox{1ex}{$h_i$}\!\left/ \!\raisebox{-1ex}{$h_o$}\right.$   iv) $\raisebox{1ex}{$h_o$}\!\left/ \!\raisebox{-1ex}{$h_i$}\right.$

Ray which seems to be travelling towards the focus of a convex mirror, after reflection will travel :

Size of image formed by a convex mirror is always

An object is placed at a certain distance on the principal axis of a concave mirror. The image is formed at a distance of $30 \mathrm{cm}$ from the mirror. Find the object distance if the radius of curvature $R=15 \mathrm{cm}$.

All the distances related to spherical mirrors will be measured from

The minimum distance from real object to a real image in a concave mirror is