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What is the difference between regular reflection of light and diffuse reflection of light? What type of reflection of light takes place from:- a cinema screen
- a plane mirror
- a cardboard
- still water surface of a lake
The difference between regular reflection of light and diffuse reflection of light is given below:
| Regular reflection of light | Diffuse reflection of light |
1. In regular reflection, a parallel beam of incident light is reflected as a parallel beam in one direction only because of the smooth surface of the plane. | 1. In diffused reflection, a parallel beam of incident light is reflected in all directions because of the rough surface of the plane. |
| S.No. | Type of Surface | Type of Reflection |
| a | a cinema screen | Diffused Reflection |
| b | a plane mirror | Regular Reflection |
| c | a cardboard | Diffused Reflection |
| d | still water surface of a lake | Regular Reflection |
Explanation with the image is posted for reference only.
1. Specular/ Regular reflection - It is the common mirror-like reflection of the light rays. In this type of reflection, the rays of light that are reflected from a smooth and shiny object such as a mirror, are reflected at a definitive angle and each incident ray which is reflected along with the reflected ray has the same angle to the normal as the incident ray. Thus, this type of reflection produces a clear image.
2. Diffused/ Irregular reflection - It is a non-mirror-like reflection of light rays. In this type of reflection, the rays of light hit an irregular object with a rough surface such as white marble, plaster, and wind-blown water, are reflected back and scatter in all directions. Here, incident ray is reflected at many angles rather than at just one angle as in the case of specular reflection. Thus, this type of reflection produces a disrupted image.
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