Q 14. An object 5.0 cm in length is placed at a distance of 20 cm in front of a convex mirror of radius of curvature 30 cm. Find the position of the image, its nature and size.
Radius of curvature, R = 30 cm
Focal length, f = R/2 = 15 cm
Object distance, u = -20 cm
Let the image distance be v
Since v is positive image is formed behind the mirror.
Object size = 5 cm
A virtual, erect and diminished image of size 2.14 cm would be formed 8.57 cm behind the mirror.