Advertisements
Advertisements
प्रश्न
The image formed by a convex mirror is of size one third the size of object. How are u and v related?
उत्तर
Magnification is
m = `"I"/"O" = (1/3"O")/"O" = 1/3`
A convex mirror always forms a virtual and an upright image. So,
m = `-"v"/"u"`
∴ `-"v"/"u"` = `1/3`
∴ v = `-1/3"u"`
But , u is always negative
∴ v = `1/3"u"`
∴ u = 3v
APPEARS IN
संबंधित प्रश्न
A ray of light is incident normally on a plane mirror. What will be the
angle of reflection?
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.
What is the nature of spherical mirror?
Name the spherical mirror which can produce a real and diminished image of an object.
State the direction of incident ray which after reflection from a spherical mirror gets reflected along its own path. Give a reason.
Define the terms pole, principal axis and centre of curvature with reference to a spherical mirror.
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?
Does the mirror mentioned in part (b) form real image for all locations of the object?
The sun is seen before the sunrise and after the sunset.
The radius of curvature of a spherical mirror is 18 cm. What is the focal length of this mirror?
