Does the mirror formula hold good for a plane mirror?

In these question, a statement of assertion followed by a statement of reason is given .Choose the correct answer out of the following choices: Assertion and reason both are correct statements and reason is correct explanation for assertion. Assertion and reason both are correct statements but reason is not correct explanation for assertion. Assertion is correct statement but reason is wrong statement. Assertion is wrong statement but reason is correct statement. Assertion: the mirror formula can be applied to a plane mirror. Reason: A lane mirror is a spherical mirror of infinite focal length

The mirror formula holds for a spherical mirror of large aperture only. (True/false)

What is a mirror formula?

Image formed by a plane mirror is

By stating sign conventions and assumptions made,derive mirror formula for a concave mirror.

Derive mirror formula for a convex mirror.

Image formed by a plane mirror is :-