$A$ plane mirror can be used to form a real image equal in size as of the object.

What is the focal length of a plane mirror?

Through which of the following points will a ray passing through the centre of curvature and reflected by a concave mirror pass?

If the angle of incidence on a plane mirror is $30^{\circ}$,what is the angle of reflection (in $^{\circ}$)?

Multiple images are formed by a thick plane mirror. Which of the following is the brightest of all the images?

$(a)$ Write one use of a concave mirror as well as a convex mirror.
$(b)$ Draw ray diagrams for the following cases when a ray of light:
$(i)$ passing through the centre of curvature of a concave mirror is incident on it.
$(ii)$ parallel to the principal axis is incident on a convex mirror.
$(iii)$ is incident at the pole of a convex mirror.
$(iv)$ passing through the focus of a concave mirror is incident on it.