Table of Contents
How concave mirrors are made?
It turns out that if you rub two bars of metal (or pieces of glass) across each other with grinding paste in between, one surface naturally ends up convex, and the other concave.
How are concave and convex mirrors made?
Spherical mirrors contain curved surfaces which are painted on either one of the sides. When an inward surface of a spherical mirror is painted, then this type of mirror is considered a convex mirror. In the meantime, when the outward surface of the spherical mirror is painted, this mirror is called a concave mirror.
How concave glass is made?
Workers cut the sheet of glass to size and then clean and polish it, using a UV lamp to check for dust or impurities (any rogue particles would cause the glass to crack or shatter). They construct a steel mould shaped to the curve radius and dimensions of the desired piece.
How do you make a convex mirror?
How to Make a Convex Mirror
- Spray paint the ceiling medallion.
- Glaze the ceiling medallion using Burnt Umber craft paint that has been thinned down with just a tiny amount of water.
- Very carefully, remove the mirror from the metal encasing by first cutting away the rubber gasket with the box cutter.
Are concave mirrors real or virtual?
Concave mirrors can produce both real and virtual images depending on the distance from the mirror to the object and the curvature of the mirror, while convex mirrors produce only virtual images.
What are the 6 cases of a concave mirror?
There are six possibilities of the position of object in the case of concave mirror.
- Object at infinity.
- Object between infinity and centre of curvature (C)
- Object at centre of curvature (C)
- Object between centre of curvature (C) and Principal focus (F)
- Object at Principal Focus (F)
What images are formed by concave mirrors?
Concave mirrors form both real and virtual images. When the concave mirror is placed very close to the object, a virtual and magnified image is obtained and if we increase the distance between the object and the mirror, the size of the image reduces and real images are formed.
How do you make a spherical mirror?
For a spherical mirror, the optical axis passes through the mirror’s center of curvature and the mirror’s vertex, as shown in (Figure). A spherical mirror is formed by cutting out a piece of a sphere and silvering either the inside or outside surface.
How image is formed in concave mirror?
The formation of an image that occurs in a concave mirror mainly depends on the distance between the object and the mirror. Both real and virtual images are formed by the concave mirror. When the object is placed very close to the mirror, a virtual and magnified image is formed.
What is difference between convex and concave mirrors?
A convex mirror is curved outwards, and concave mirror is curved inwards. (B). The focal point is in front of the convex mirror, and for a concave mirror, it is behind. The fundamental difference between them is that the reflective surface of a concave mirror is inside the sphere and that of a convex mirror is outside.
What are the characteristics of a concave mirror?
Concave mirrors can produce both real and virtual images; they can be upright (if virtual) or inverted (if real); they can be behind the mirror (if virtual) or in front of the mirror (if real); they can also be enlarged, reduced, or the same size as object.
What is an example of a convex mirror?
The most commonly seen example of a convex mirror is the side view mirror on a car. Convex mirrors are seen in dome mirrors found in offices and stores for security and anti-theft purposes.
What are concave mirrors used for?
Uses of concave mirror. The concave mirror is a converging mirror , so that it is used for many purposes , It is used as a torch to reflect the light , It is used in the aircraft landing at the airports to guide the aeroplanes , It is used in shaving to get an enlarged and erect image of the face .
What is the definition of concave mirror?
A concave mirror is a mirror that is curved inward in the middle. It might help you to remember this if you think that when you look in a concave mirror, it looks like you are looking into a cave. The law of reflection is still true for concave mirrors but because the mirror’s surface is curved, the angle at which the light hits the surface, also known as the incident angle, is different depending on which part of the mirror the light hits.