 no matter how far you stand from a mirror your image appears erect the mirror is only plane nahi convex also is possible either plane or convex is correct clear mirror a spherical mirror and a thin spherical lens have each a focal length of negative 15 centimeter a spherical mirror and a thin spherical lens both have a focal length of negative means even the mirror and lens both are con the k-way the mirror and the lens are likely to be both con the k-way