Ritu is standing in front of a plane mirror. The distance between Ritu and her image is 10 m. If she moves 2 m towards the mirror, then the distance between Ritu and her image is

 We know that the distance of the object from the mirror equals the distance of image from the mirror. So, firstly Ritu is standing at 5 m from the mirror. If she moves 2 m towards the mirror, then her image will come closer by 2 m.Therefore, Now distance between Ritu and her image is = 3m + 3m = 6 m.