Question

1. An object is placed 20 cm in front of a plane mirror. The mirror is moved 5 cm towards the object. The distance between the positions of the original and final images seen in the mirror is

Answer 1

Explanation:

An object is placed 20 cm in front of a plane mirror then the image is formed at 20 cm behind the mirror. If the mirror is moved 2 cm toward the object. Hence, The total distance between the positions of the original and final image is 4 cm

Answer 2

5 cm

as the mirror came forward ,image also will come close in the same dist. accordingly