Question

1)An object of 20mm high is placed 60mm in front of a mirror of the focal length 20mm find the position of the image if the mirror is convex and concave
2) a n object is placed in front of a concave mirror of the focal length 16mm the image formed has magnification of 4 find the position of the object if the image is
A)real
B) virtual

Answer 1

I don't have any idea about this because I don't know

Answer 2

I want answers of my questions