Regular And Diffused Reflection
Chapter Name : Light |
Sub Topic Code : 101_08_16_03_01 |
Topic Name : Regular And Diffused Reflection |
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Sub Topic Name : Regular And Diffused Reflection |
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Introduction
Direction of light ray after reflection depends on the reflecting surface.
Pre-Requisites:
Basic knowledge about reflection of light.
Activity:
Try to change the direction of the torch light by putting a mirror in its way at different angles.
Real Life Question:
“Why we are able to see our image in a mirror?”
Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
|---|---|
| Regular reflection | When light reflects from a smooth surface. |
| Diffused reflection | When light reflects from a surface on which some irregularities are present, this type of reflection is called diffused reflection. |
Learning aids / Gadgets
| Gadgets | How it can be used |
|---|---|
| Plane mirror | See image of yourself in it and write the various properties of image formed. |
Real life uses :
It is regular reflection which helps us to see any object present around us.
Places to visit :
You have enough things at home to understand reflection of light, like plane mirror, torch light, ruler, paper etc.
Practical examples around us
| Examples | Explainations |
|---|---|
| Mirrors | We see images in these mirrors due to the reflection only. |
| Solar Cooker | Solar cooker also works on the principal of reflection. Light from sun after reflecting from glass falls on food. |
What you learn in Theory:
In the regular reflection incident rays are parallel to the reflected rays and in diffused reflection incident rays are not parallel to the reflected rays.
What you learn in Practice:
We can see objects properly only because of the regular reflection. Laws of reflection are valid for regular as well as diffused surfaces.