Question

give a nature size and position of the image formed in case of a concave mirror for different positions of the object?

Answer 1

1)When object is at infinity, the image will form at the principal focus. The image will be point-sized(highly diminished), real and inverted.
2) when object is beyond C, the image will form between F and C. The image will be inverted,real and diminished.
3) when the object is at C, the image will form at C. The image will be inverted, real and of the same size.
4) when the object is between F and C, the image will form beyond C. The image will be real,inverted and enlarged.
5) when the object is at F, the image will form at infinity. The image will be highly enlarged,inverted and real
6) when the object is betweeen P(pole) and F , the image will form behind the mirror. Th image will be erect, virtual and enlarged

Hope it helps ya