Reflection Of Light
Chapter Name : Light-Reflection And Refraction |
Sub Topic Code : 101_10_10_01_01 |
Topic Name : Reflection Of Light |
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Sub Topic Name : Reflection Of Light |
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Introduction
When light falls on a highly polished surface its direction changes.
Pre-Requisites:
Basic properties of light and reflecting surfaces.
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?” “Why we see anything present around us?”
Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
|---|---|
| Reflection of light | A highly polished surface, such as a mirror, changes the direction of incoming light falling on it. |
| Laws of Reflection | Light when reflected follows a certain set of rules called laws of 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 :
Aids 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:
A highly polished surface reflects light falling on it. Reflection happens within a set of rules, laws of reflection. Image formed by a plane mirror is virtual, & erect.
What you learn in Practice:
It is the Reflection of light by which we see the various objects around us. In day to day life we use plane mirror to see our image.