Question

An object is placed in front of mirror in 20 cm.the mirror is moved 2cm towards the object.the distance the final position and mirror is

Answer 1

Answer:

The total distance between the positions of the original and final image is 4 cm.

Explanation:

We know that,

For plane mirror,

The image distance = - The object distance

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.

The distance between object and mirror = 20-2 = 18 cm

The distance between image and mirror = 20-2 = 18 cm

Therefore, the total distance between the positions of the original and final image is

d = distance of the original image - distance of the final image

d =40 -36d=40−36

d = 4 cmd=4cm

Hence, The total distance between the positions of the original and final image is 4 cm.