Advertisements
Advertisements
Question
Numerical problem.
The radius of curvature of a spherical mirror is 25 cm. Find its focal length.
Advertisements
Solution
Given:
Radius of curvature = 25 cm
To find: f =?
Solution:
f = `R/2`= `25/2`
f = 12.5 cm
APPEARS IN
RELATED QUESTIONS
When a spherical mirror is held towards the sun and its sharp image is formed on a piece of a carbon paper for some time, a hole is burnt in the carbon paper.
Why is a hole burnt in the carbon paper?
Name the kind of mirror used to obtain
(a) a real and enlarged image
(b) a virtual and enlarged image
(c) a real and diminished image, and
(d) a virtual and diminished image.
Figure shows a concave mirror with its pole at P, focus F and centre of curvature C. Draw ray diagram to show the formation of image of an object OA.
State whether the image in part (a) is real or virtual?
Upto what maximum distance from the pole the image in a convex mirror can be obtained? what will be the location of object then ?
Define the following term in relation to concave mirror.
Aperture
Define linear magnification produced by a mirror?
If the real image of a candle flame formed by a lens is three times the size of the flame and the distance between lens and image is 80 cm, at what distance should the candle be placed from the lens?
For a spherical mirror, ______ is true.
