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प्रश्न
What is the relation between focal length and radius of curvature of a concave mirror?
उत्तर
Focal length of a spherical mirror is equal to half of the radius of curvature of spherical mirror.
Focal length = `"Radius of curvature"/2`
f = `"R"/2`
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संबंधित प्रश्न
Name the spherical mirror which can produce a virtual and diminished image of an object.
Define the following terms in the context of spherical mirrors :
(i) Pole
(ii) Centre of curvature
(iii) Radius of curvature
(iv) Principal axis
Complete the following diagrams in Figure by drawing the reflected rays for the incident rays 1 and 2.
The diagram below in Figure, shows a convex mirror. C is its centre of curvature and F is its focus. (i) Draw two rays from A and hence locate the position of image of object OA. Label the image IB. (ii) State three characteristics of the image.
Discuss the position and nature of image formed by a concave mirror when an object is moved from infinity towards the pole of mirror.
The radius of curvature of a convex mirror is 40 cm. Find its focal length.
A point light source is kept in front of a convex mirror at a distance of 40 cm. The focal length of the mirror is 40 cm. Find the position of image.
Complete the following diagrams shown in the following figures by drawing the reflected rays.
Define the term Focus of a concave mirror.
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
