Q 12-09-130JEE MainJEE Main 2023 (10 Apr, Shift 1)Easy
An object is placed at a distance of $12$ cm in front of a plane mirror. The virtual and erect image is formed by the mirror. Now the mirror is moved by $4$ cm towards the stationary object. The distance by which the position of image would be shifted, will be
Answer: (B) 8 cm towards mirror
Moving a plane mirror by $x$ shifts the image by $2x$ in the same direction. The image (originally $24$ cm from the object) moves $8$ cm towards the object, i.e. towards the mirror, ending $16$ cm from the object.
Solution by Sreeraj P, M.Sc Physics