Laws Of Reflection
Chapter Name : Light |
Sub Topic Code : 101_08_16_02_01 |
Topic Name : Laws Of Reflection |
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Sub Topic Name : Laws Of Reflection |
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Introduction
When light falls on a highly polished surface its direction changes.
Pre-Requisites:
Basic knowledge about 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 the things around us?” “Why we are able to see our image in a mirror?”
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. It is termed as reflection of light. |
| Laws of reflection | When light reflects from a polished surface it follows some specific rules, which are 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 :
Light 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.
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, which form image by reflection.