Question

an object 3 cm high is placed at distance of 8 cm from a concave mirror which produces a virtual image 4.5 cm high

1) what is focal length of mirror

2) what is the position of images

3) draw a ray diagram to show the formation of image​

Answer 1

Therefore, the distance of the image 'v' is 12 cm behind the mirror. Thus, the focal length of the concave mirror 'f' is 24 cm.