Parallel rays are coming from distant object falls on a concave mirror. Where does they meetafter reflection and what is the nature of the image explain wit ray
diagram?
Answers
Answer: For a concave mirror, it lies in front of the mirror. ... This is normal to the mirror at its pole. Principal focus: the incident rays coming parallel to the principal axis after reflection appear to converge to a common point on the principal axis, this point is called the principal focus of a concave mirror.
Answer: Important Terms
Pole: it is the centre of the reflecting surface of a spherical mirror. It lies on the surface of the mirror and it is usually denoted by P.
Centre of curvature: the centre of the sphere formed by the reflecting part of a spherical mirror is called centre of curvature. It is generally denoted by C. This is not a part of the mirror and it lies outside the reflecting surface of the mirror. For a concave mirror, it lies in front of the mirror.
The radius of curvature: it is the radius of the sphere formed by the reflecting part of the sphere. It is represented by R.
Principal axis: it is the straight line passing through the pole and centre of curvature of the spherical mirror. This is normal to the mirror at its pole.
Principal focus: the incident rays coming parallel to the principal axis after reflection appear to converge to a common point on the principal axis, this point is called the principal focus of a concave mirror. It is usually denoted by F.
Focal length: it is the distance between the pole and principal focus of the concave mirror. It is denoted by f. ( Check Image 1)
