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प्रश्न
Define (a) centre of curvature (b) radius of curvature (c) pole (d) principal axis, and (e) aperture, of a spherical mirror with the help of a labelled diagram
उत्तर
(a) Centre of curvature (C) – It is the centre of the sphere from which the mirror is formed.
(b) Radius of curvature (R) – It is the radius of the sphere from which the mirror is formed.
R = PC
(c) Pole (P) – Pole is the centre of the curved mirror surface, MM’.
(d) Principal axis – It is the line joining P and C.
(e) Aperture – It is the effective length of the mirror, i.e. MM’.
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संबंधित प्रश्न
Explain the following term related to spherical lenses:- optical centre
Define the Focal length of a spherical mirror
Explain the following term:
Incident ray
Draw diagram/diagrams to show them.
State the kind of mirror used
(a) By a dentist,
(b) As a search-light reflector.
What do you understand by the term real image?
Define the term Centre of curvature.
An object 10 cm high is placed at a distance of 20 cm in front of a spherical mirror of focal length 25 cm. By scale drawing find the nature, position, and magnification of the image in the following case:
Convex mirror
The distance from the center of curvature of the mirror to the pole is called the focal length of the mirror.
