Advertisements
Advertisements
प्रश्न
If the image formed by a mirror for all positions of the object placed in front of it is always diminished, erect and virtual, state the type of the mirror and also draw a ray diagram to justify your answer. Write one use such mirrors are put to and why.
उत्तर
The type of the mirror is convex mirror.
Ray diagram is shown below:
Use of convex mirror
A convex mirror always produces a smaller, virtual, and erect image of an object.
In convex mirror, the length of the image is shorter than that of the object. Hence, it is used as a side view mirror in vehicles because the viewed area must be larger than the surface area of the mirror. The convex mirror forms images of vehicles that are spread over a relatively larger area.
APPEARS IN
संबंधित प्रश्न
Find the focal length of a convex mirror whose radius of curvature is 32 cm.
In a convex spherical mirror, reflection of light takes place at:
(a) a flat surface
(b) a bent-in surface
(c) a bulging-our surface
(d) an uneven surface
A man standing in front of a special mirror finds his image having a very small head, a fat body and legs of normal size. What is the shape of:
(a) top part of the mirror?
(b) middle part of the mirror?
(c) bottom part of the mirror?
Give reasons for your choice.
Write true or false
The focal length of a convex mirror is equal to its radius of curvature.
A convex mirror is used
Why are the mirrors fitted on the outside of cars convex?
Nature of the images formed by a convex mirror is _______.
When the reflecting surface is curved outwards the mirror formed will be ______.
A boy is standing at a distance of 3m in front of a plane mirror. The distance between the boy and his image is ______m.
If the object is at infinity in front of a convex mirror the image is formed at infinity.
