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?
Advertisements
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
Explain the following term related to spherical lenses:- principal axis
State the two kinds of spherical mirror and distinguish them with the aid of proper diagrams.
Which mirror will you prefer to use as a rear view mirror in a car : plane mirror or convex mirror? Give one reason.
How will you distinguish between a plane mirror, a concave mirror and a convex mirror, without touching them?
The erect image formed by a concave mirror is of size double the size of object. How are u and v related?
When an object of height 1 cm is kept at a distance 4 cm from a concave mirror, its erect image of height 1.5 cm is formed at a distance 6 cm behind the mirror. Find the focal length of mirror, by drawing.
Define the term Aperture.
What is a mirror formula?
Which of the following has curved reflecting surface?
