Question

hey frnds❤️❤️What is the focal length of the plane mirror​

Answer 1

hey mate here is the ans of your qus......

Focal length of the plane mirror is infinity..

A plane mirror can be consider as a sperical mirror of infinite radius of curvature .

Hope it helps u

Good Night ...

Answer 2

Hii..

The centre of curvature of a plane mirror is assumed to be located at infinite distance from the mirror.

So its radius of curvature R , is infinite.

Since, focal length, F = R / 2 = infinity / 2 = infinity.

Thus , focal length of a plane mirror is also Infinite.

Hope this helps !