Advertisements
Advertisements
प्रश्न
How is the focal length of a spherical mirror related to its radius of curvature?
Advertisements
उत्तर
Focal length is half the radius of curvature of a spherical mirror.
f = `"R"/2`
APPEARS IN
संबंधित प्रश्न
Explain the following term related to spherical lenses:- centres of curvature
Explain the following term related to spherical lenses:- principal axis
Name the spherical mirror which has:
(a) virtual principal focus.
(b) real principal focus.
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 mirror which always produces an erect and virtual image. How is the size of image related to the size of object?
Name the kind of mirror used to obtain:
A virtual and enlarged image
A real and enlarged image can be obtained by using a
Define the following term:
convex mirror
In the following figure shows a concave mirror with its pole (P), focus (F) and centre of curvature (C). Draw a ray diagram to show the formation of the image of an object AB by the concave 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?
