An object is placed at the principal focus of a convex mirror. The image will be at

$A$ concave mirror is used to form an image of the Sun on a white screen. If the lower half of the mirror were covered with an opaque card,the effect on the image on the screen would be

$A$ concave shaving mirror has a radius of curvature of $35.0 \, cm$. It is positioned so that the upright image of a man's face is $2.5 \, times$ the size of the face. How far is the mirror from the face in $cm$?

Write the relationship between the radius of curvature and the focal length for a spherical mirror.

$A$ thin rod of length $f/3$ lies along the axis of a concave mirror of focal length $f$. One end of its magnified image touches an end of the rod. The length of the image is

The image formed by a convex mirror of a real object is larger than the object: