A mirror is a reflecting surface that reflects every type of light that is incident on the surface. Mirrors basically have flat or curved surfaces.
Mirror which has a flat surface is called a plane mirror and a mirror which has a curved surface is called a spherical mirror.If the object is placed in front of the mirror then the object’s image is seen in the mirror.
Mirror
A mirror is a reflective surface that reflects every type of light and produces either a real image or a virtual image. When an object is placed in front of a mirror then the image of the object is seen in the mirror.
Plane Mirror and Spherical mirror
For different purposes different types of mirror are formed. The most important type of mirror are –
- Plane Mirror
- Spherical Mirror
Plane Mirror
A plane mirror whose reflective surface is flat. A plane mirror always forms a virtual image, the same shape and size as the object.
Spherical Mirror
A spherical mirror is a mirror which is curved in shape and has a constant radius of curvature. Spherical mirrors formed either real or virtual images.
Spherical mirror are of two types-
- Concave Mirror
- Convex Mirror
Concave Mirror
When a hollow sphere is cut into the parts and the outer surface of the cut part is painted with its inner surface as the reflecting surface. These mirrors are called concave mirrors.
Characteristics of Concave Mirrors
A convex mirror converges the light ray when they strike with its reflecting surface so it is known as a converging mirror.
Concave mirrors formed real or virtual images.
Convex Mirror
When the cut part of the hollow sphere is painted from the inside then its outer surface becomes the reflecting surface. These mirrors are called convex mirrors.
Characteristics of Convex Mirrors
A convex mirror diverges the light ray when they strike with its reflecting surface so it is known as a diverging mirror.
Virtual, erect, and diminished images are formed with convex mirrors
Image Formation by Concave Mirror
Different types of images can be formed when the position of objects are changed.
Some position of object
- At the infinity
- Beyond the centre of curvature
- At the centre of curvature
- Between principal focus and centre of curvature
- At the principal focus
- Between the principal focus and pole
When object is placed at infinity
Real and inverted images are formed at the focus and image size is smaller than the object.
When object is placed back of the centre of curvature
Real image is formed between focus and the centre of curvature and image size is smaller than the object.
When object is placed at the centre of curvature and focus
Real image is formed at the centre of curvature and image size is the same as the object.
When object is placed in the mid of focus and centre of curvature
Real image is formed behind the centre of curvature and the image size is larger than the object.
When object is placed at the focus
Real image is formed at infinity and the image size is larger than the object.
object is placed in the mid of pole and focus
Virtual and erect images are formed and image size is larger than the object.
Image Formation by Convex Mirror
Convex mirror always formed virtual and erect image.Some position of object are-
When object is placed at infinity
Virtual image is formed at the focus and the image size is smaller than the object.
When object is placed at a limited distance
Virtual image is formed between the pole and the focus and the image size is smaller than the object.
Difference Between Concave Mirror and Convex Mirror
| Concave Mirror | Convex Mirror |
|---|---|
| Concave mirror are those mirror whose reflecting surface are towards the centre of curvature | Convex mirror are those mirror whose reflecting surface are away from the centre of curvature |
| Concave mirror are converging in nature | Convex mirror are diverging in nature |
| They form real and virtual image | They form virtual image |
| Concave mirror are used in projectors, searchlights and saving mirror | Convex mirror are uses in car or bikes |
Applications of Concave Mirror and Convex Mirror
These are the basic use of Concave Mirror and Convex Mirror
Concave Mirror are used in –
- Shaving mirrors
- Head mirrors
- Ophthalmoscope
- Astronomical telescopes
- Headlights
Convex Mirror are used in –
- Inside buildings
- Vehicle mirrors
- Magnifying glass
- Security purposes
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Concave mirrors are those mirrors whose reflecting surface is towards the centre of curvature. Convex mirror are those mirror whose reflecting surface are away from the centre of curvature Convex mirror are used in Vehicle mirrors and Magnifying glass Convex mirror diverge the light which fall on its surface so convex mirror is also called diverging mirror A convex mirror always forms a virtual image which is diminished. The magnification of a convex mirror is always less than one. Concave Mirror And Convex Mirror FAQs
Write the difference between concave mirror and convex mirror?
Write the two uses of Convex Mirror?
Convex Mirror is also called?
What will be the magnification produced by Convex Mirror?
