Question

the image of an object formed by a mirror is real .inverted and is of magnification -1. if a image is at a distance of 40cm from the mirror where is object placed and also find the focal length of the mirror. where would be the image if moved 20 cm towards mirror. draw the ray diagram for the new position of the object ​

Answer 1

the image of an object formed by a mirror is real .inverted and is of magnification -1. if a image is at a distance of 40cm from the mirror where is object placed and also find the focal length of the mirror. where would be the image if moved 20 cm towards mirror. draw the ray diagram for the new position of the object

Answer 2

Concave mirror

-1=v/u

-u=v=40

u=-40

Hence u=v then object is placed at c

If c=40 then f=20

If the object moves 20cm towards the mirror then the object is at f.

Image is formed at infinity.

Draw the ray diagram when the

Object is at f.