Advertisements
Advertisements
प्रश्न
What is the relation between the focal length and radius of curvature of a spherical mirror (concave mirror of convex mirror)? Calculate the focal length of a spherical mirror whose radius of curvature is 25 cm.
उत्तर
The relation between the focal length and radius of curvature of a spherical mirror is as follows:
Radius of curvature = 2 x focal length
R = 2f
Given, the radius of curvature 'R' = 25 cm
Then, the focal length `f``=25/2 =12.5cm`
APPEARS IN
संबंधित प्रश्न
What type of image is formed:
on a cinema screen?
What is the name of the phenomenon in which the right side of an object appears to be the left side of the image in a plane mirror?
Name the two types of spherical mirrors. What type of mirror is represented by the:
back side of a shining steel spoon?
Complete the following diagrams shown in Fig. by drawing the reflected ray for each of the incident ray A and B.
Does the mirror mentioned in part (b) form real image for all locations of the object?
(a) When a concave mirror is used as a shaving mirror, where is the person's face in relation to the focus of mirror?
(b) State three characteristics of the image seen in part (a).
If the focal length of a spherical mirror is 10 cm, what is the value of its radius of curvature?
Numerical problem.
The radius of curvature of a spherical mirror is 25 cm. Find its focal length.
