Which one of the following is not true about the image formed by a concave mirror?
1
The incident ray which is parallel to the principal axis passes through the focus of the concave mirror.
2
When the object is closer to the mirror, a real and diminished image is formed.
3
The incident light passing through the centre of curvature returns in the same path after reflection from the spherical surface.
4
A virtual image, erect and a bigger image is formed if the object is placed between the focus and the pole of the mirror.