Question

A man is standing 10 cm in front of a plane mirror find the distance of the image from his position​

Answer 1

the distance of the image from his position is 10 CM as when we stand near a plane mirror the image formed is displayed with the same distance

Answer 2

distance from mirror is 10 cm .

we know image distance = object distance ..... according to the property of plane mirror.
image will form 10 cm behind th mirror.

but object of at 10 cm already
therefore ,
image distance is 10 + 10 = 20 cm .

hope you will understand it...