NCERT Solution: Light Reflection and Refraction
Object distance, u = -20 cm
Object height, h = 5 cm
Radius of curvature, R = 30 cm
Radius of curvature = 2 � Focal length
R = 2f
f = 15 cm
According to the mirror formula,
The positive value of v indicates that the image is formed behind the mirror.
The positive value of image height indicates that the image formed is erect.
Therefore, the image formed is virtual, erect, and smaller in size.