Reflection Of Light By Spherical Mirrors
Chapter Name : Ray Optics And Optical Instruments |
Sub Topic Code : 101_12_09_02_04 |
Topic Name : Reflection Of Light By Spherical Mirrors |
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Sub Topic Name : The Mirror Equation |
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Introduction
Optics is the branch of physics which involves the behaviour and properties of light, including its interactions with matter and the construction of instruments that use or detect it.
Pre-Requisites:
Optics
Activity:
Passenger-side mirror.
Real Life Question:
What is a spherical mirror?
Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
|---|---|
| Spherical mirror | A spherical mirror is a mirror which has the shape of a piece cut out of a spherical surface. |
Learning aids / Gadgets
| Gadgets | How it can be used |
|---|---|
| Mirror | A mirror is an object that reflects light in a way that preserves much of its original quality subsequent to its contact with the mirror. |
Real life uses :
Vision.
Places to visit :
Car.
Practical examples around us
| Examples | Explainations |
|---|---|
| Passenger-side wing mirrors of cars. | These type of mirrors have wider fields of view than equivalent flat mirrors, but objects which appear in them generally look smaller (and, therefore, farther away) than they actually are. |
What you learn in Theory:
The mirror equation expresses the quantitative relationship between the object distance (do), the image distance (di), and the focal length (f).
What you learn in Practice:
The magnification equation relates the ratio of the image distance and object distance to the ratio of the image height (hi) and object height (ho).