Image Formation By Concave Mirrors

The object here is very far away (at infinity distance) from the Mirror and hence the Image is formed at F.
Nature Of The Image:- Real & Inverted.
Size Of The Image:- Highly Diminished, Point-Sized

The object here is beyond C and hence the Image is formed between C and F.
Nature Of The Image:- Real & Inverted.
Size Of The Image:- Diminished

The object here is at C and hence the Image formed is also at C.
Nature Of The Image:- Real & Inverted.
Size Of The Image:- Same-Sized

The object here is between C and F and hence the Image formed is beyond C.
Nature Of The Image:- Real & Inverted.
Size Of The Image:- Enlarged

The object here is at F and hence the Image is formed at infinity (as the rays do not intersect).
Nature Of The Image:- Real & Inverted.
Size Of The Image:- Highly Enlarged

The object here is between F and P and hence the Image is formed behind the mirror.
Nature Of The Image:- Virtual and Erect
Size Of The Image:- Enlarged

Table

Image Formation By Convex Mirrors

The object here is at infinity and hence the Image is formed at F (which is behind the mirror).

Nature Of The Image:- Virtual and Erect.

Size Of The Image:- Highly Diminished, point-sized

The object here is beyond C and hence the Image formed is between F and P(behind the mirror).

Nature Of The Image:- Virtual and Erect.

Size Of The Image:- Diminished

Table

Rays for Image Formation in Reflection

(i) A ray parallel to the Principal Axis, after reflection, will pass through the Principal Focus in case of a Concave Mirror or appear to diverge from the Principal Focus in case of a Convex Mirror.

(ii) A ray passing through the Principal Focus of a Concave Mirror or a ray which is directed towards the Principal Focus of a Convex Mirror, after reflection, will emerge parallel to the Principal Axis.

(iii) A ray passing through the Centre Of Curvature of a Concave Mirror or directed in the direction of the Centre Of Curvature of a Convex Mirror, after reflection, is reflected back along the same path.

(iv) A ray incident obliquely to the Principal Axis towards a point P on the Concave Mirror or a Convex Mirror, is reflected obliquely.

Any 2 of these rays can be used to draw Ray Diagrams and the point of intersection of the rays indicates the position of the image of the object.

Note:- All these rays follow the Law Of Reflection i.e. the Angle Of Incidence and the Angle of Reflection in all these cases will be equal.

Light

Light is electromagnetic radiation that is visible to the human eye, and is responsible for the sense of sight.
Primary properties of visible light are intensity, propagation direction, frequency or wavelength spectrum, and polarisation, while its speed in a vacuum, 299,792,458 meters per second (about 300,000 kilometers per second), is one of the fundamental constants of nature. Visible light, as with all types of electromagnetic radiation (EMR), is experimentally found to always move at this speed in vacuum. The interaction of light and matter give birth to 2 important phenomenons :-
1. Reflection Of Light
2. Refraction Of Light

Reflection Of Light
Reflection is the phenomenon of light which enables it to bounce back after striking an object.

We can also say that, when reflection occurs a light ray strikes an object and returns back into the medium from which it originated. 

Laws Of Reflection

All the light rays follow some laws of reflection:-

1. The angle of incidence is equal to the angle of reflection.

2. The incident ray, the normal to the mirror at the point of incidence and the reflected ray, all lie in the same plane.

Types of Mirrors

There are 2 types of mirrors namely:-

1. Plane Mirror

2. Curved Mirrors

Plane Mirror

Plane mirror is a mirror with a planar reflective surface. A plane mirror creates images of objects in front of it; these images appear to be behind the plane in which the mirror lies.

The images formed by such mirrors are virtual (meaning that the light rays do not actually come from the object), upright and of the same size as the actual object. The focal length of a plane mirror is infinite.

Curved Mirrors

A curved mirror is a mirror with a curved reflective surface unlike the plane mirrors. It maybe of a bulging outward(Convex) type or a bulging inward(Concave) type. Any curved mirror can also be called a part of an imaginary sphere having some focal length.

Convex Mirror

A convex mirror is a mirror with a reflective surface curved outwards.

Such a mirror  can also be called a diverging mirror.

Concave Mirror

A concave mirror is a mirror with a reflective surface curved inwards(cave like).

Such a mirror can also be called a converging mirror.