Question

If a plane mirror and an object placed in front of it,
both move towards each other by 10 cm, find the
shift in the position of the image.​

Answer 1

The effective speed with which the mirror will move away from the object will be 5−2=3 cm/s

Hence, after 10s, mirror will be 30 cm away from object. The mirror will be 50 cm from its original position and the object 20 cm.

The original image was formed 40 cm on the right of the mirror. The new image will be formed 40+30=70 cm on the right of the new position of the mirror

If O is origin,

Original position of object=0

Original position of mirror= 40

Original position of image= 80

New position of object= 20

New position of mirror= 90

New position of mage= 160

Hence, shift in image= 160−80=80 cm

Answer 2

students the answer hai 10 cm