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प्रश्न
What is irregular reflection ? Give an example.
By giving one example and one use explain or define irregular reflection.
उत्तर १
Irregular reflection – When a beam of light falls on such a surface which is not perfectly smooth and polished such as wall, wood, paper etc. the different portions of the surface reflect light in different directions. Such a reflection of light in different directions. Such a reflection of light from an uneven surface is called the irregular or diffused reflection.
उत्तर २
Irregular reflection or Diffused reflection: The phenomenon due to which a parallel beam of light, traveling through some medium, gets reflected in various possible directions, on striking some rough surface is called irregular reflection.
For example: Reflection taking place from ground, walls, trees, suspended particles in the air is irregular reflection.
Use: It helps in the general illumination of places and helps us to see things around us.
संबंधित प्रश्न
Select the correct alternative
The image formed by a plane mirror is
The following diagram shows a point object O placed in front of a plane mirror. Take two rays from the point O and show how the image of O is formed and seen by the eye.
Draw a figure showing the following.
- Incident Ray
- Normal
- Angle of incidence
- Angle of reflection
- Point of incidence
- Reflected ray
The diagram below in figure shows an object XY in front of a plane mirror MM1 . Draw on the diagram, path of two rays from each point X and Y of the object to show the formation of its image .
Draw a neat diagram of reflecting periscope.
Describe the principle of simple periscope through an outline ray diagram. Give one of its uses.
An object is placed 2 cm from a plane mirror. If the object is moved by 1 cm towards the mirror, what will be the distance between the object and its new image?
An object 3 cm high produces a real image 4.5 cm high when placed at a distance of 20 cm from a concave mirror. Calculate:
- the position of image
- focal length of the concave mirror.
What is a real image?
An object OA is placed on the principal axis of a concave mirror as shown in the figure. Copy and complete the diagram to show the formation of image.
In a completely dark room, if you hold up a mirror in front of you, will you see a reflection of yourself in the mirror?
An object that blocks all of the light from passing through is ______.
______ through which light cannot pass.
Materials which reflect the light well are called ______.
What is Translucent objects? Give an example.
Figure shows a ray of light as it travels from medium A to medium B. Refractive index of the medium B relative to medium A is
The light falling on the mirror is called as ______ and the light reflected is called reflected ray.
A point source of light S is placed in front of two large mirrors as shown. Which of the following observers will see only one image of S?
