Question

an object is kept at 40cm in front of a plane mirror. If the mirror is now moved 15 cm away from the object, how does the image shift from its previous position?​

Answer 1

Answer:

20 cm

Step-by-step explanation:

The distance between the object and image formed is 40 cm.

Considering the mirror to be plane mirror.

As object and mirror both has moved by 10 cm towards each other so the relative distance between the mirror and the object will be reduced to 20 cm

As in case of plane mirror the image is formed at the same distance, so the distance of the image will be 20 cm from the mirror