Advertisements
Advertisements
Question
The image formed by a convex mirror is of size one third the size of object. How are u and v related?
Advertisements
Solution
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
RELATED QUESTIONS
A simple microscope is used by watch repairers. Give reason.
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.
At which point of the spherical mirror the carbon paper is placed?
A ray of light travels from a denser medium to a rarer medium. How will it bend?
What is a spherical mirror?
Name the kind of mirror used to obtain:
A real and diminished image.
Select the correct option:
Looking into a mirror one finds her image diminished, the mirror is:
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
In torches, search lights and headlights of vehicles the bulb is placed ______.
What is “aperture”?
