Physics

Difference Between Convex Mirror and Concave Mirror

Main difference

The main difference between convex mirror and concave mirror is that the convex mirror always forms a diminished image while the image of the concave mirror can be enlarged or diminished depending on the position of the object.

convex mirror vs concave mirror

A mirror is an object with a smooth polished or shiny surface and reflects light in some wavelength range to produce an image of any item. It is divided into two main types, that is, plane mirror and spherical mirror. A plane mirror is a mirror that has a smooth surface, while spherical mirrors are mirrors with curved surfaces. A spherical mirror is divided into two types, that is, convex mirror and concave mirror. A convex mirror is a mirror with a reflective surface that bulges outwards and forms a diminished image, while a concave mirror’s surface bulges inwards and forms an enlarged image.

Comparison chart

convex mirror Concave mirror
A spherical mirror with a reflective surface protrudes outwards and is used to diverge light and is known as a convex mirror. A spherical mirror with a reflective surface bulges inward and is used to converge light and is known as a concave mirror.
Shape
bulged out bulging inward
center of curvature
Behind the mirror In front of the mirror
Image
Virtual and erect image It can form a real, inverted image or a virtual, upright image based on the distance of the element from the mirror.
Size
The convex mirror forms a smaller image compared to the original size of the object. The concave mirror can form an image both smaller and larger than the size of the object based on the position of the object in the mirror.
Nature
It forms a diminished image. Form an enlarged image.
Projection
The image cannot be projected on the screen. The image can be projected on a screen.
Light
Divert the beam of light. The light beam converges.
Example
Convex mirrors are used as car side mirrors. Concave mirrors used in flashlights or reflecting telescopes, etc.

What is convex mirror?

Convex means “rounded or curved like the outside of a circle or sphere.” A convex mirror is also known as a fisheye mirror or a diverging mirror. If we cut a hollow sphere from the center into parts and paint its inner surface, then its outer surface will act as a reflective surface and is known as a convex mirror. It diverges the light rays that hit its reflecting surface, which is why it is known as a diverging mirror. It forms a diminished, virtual, erect image of the object because the center of curvature and the focal point are imaginary and lie within the mirror. The image will appear smaller and closer to the mirror compared to the actual object, but as the object gets closer to the mirror, the size of the object will continue to increase.

Example

They are used in roads and corridors of various buildings, etc. to overcome the problem of visibility in blind spots.

What is concave mirror?

Concave means “rounded or hollowed out.” The concave mirror is also known as a converging mirror because it converges the reflecting light beam. If the cut piece of a hollow sphere is painted facing out, its inner surface will act as a concave mirror. A concave mirror is used to focus the light. It can form a real or virtual and small or large image based on the distance of the object from the mirror. An object placed very close to the concave mirror will form a virtual and magnified image, while an object placed far away will form a real and smaller image compared to the real object. The image formed by a concave mirror can be projected on a screen.

Example

Concave mirrors used in flashlights and reflecting telescopes, etc.

Key differences

  1. A reflective outer surface of a spherical mirror is known as a convex mirror, while an inner reflective surface of a spherical mirror is known as a concave.
  2. A convex mirror diverges light while a concave mirror converges the beam of light reflected through it.
  3. The convex mirror forms a virtual image, while a concave mirror can form both a virtual and real image depending on the position of the mirror object.
  4. A diminished image formed by a convex mirror while a concave mirror formed an enlarged image.
  5. The image formed by a convex mirror cannot be projected on a screen, while the image of a concave mirror can be projected on a screen.
  6. Convex mirrors are used as car side mirrors, while concave mirrors are used in torch lights, etc.

Final Thought

According to the above discussions, it is concluded that the convex mirror is the diverging mirror and forms a virtual and diminished image, while a concave mirror is a converging mirror that can form a magnified and virtual and real type of image depending on the position. of the object. from the mirror.

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