Reflection of Light and Multiple Images

Introduction

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Reflection in Salons

• Explanation of how mirrors work in salons to see the back of your head.
• Light falls on hair and gets reflected multiple times.
• Multiple reflections create images in front mirror.
• Example: Light reflects from back mirror to front mirror, forming an image.

Experiment with Angles

• Demonstration with mirrors set at different angles.
• At 90 degrees, multiple images of an object are formed.
• The number of images increases as the angle decreases.
• Use of formula: Number of images = 360 / (Angle between mirrors) - 1.

Practical Applications

• Kaleidoscope: Uses multiple reflections to create beautiful patterns.
• Makeup and Beauty Parlors: Mirrors and light reflect to enhance visibility of hair and neck.
• Solar Cooker: Uses mirrors to reflect sunlight and increase heat inside the cooker.
• Periscope: Used in submarines to see above water. Made using cardboard and mirrors set at 45 degrees.

Summary

• Multiple reflections create multiple images.
• Smaller angles between mirrors increase the number of reflections and images.
• Practical uses include kaleidoscopes, beauty parlors, solar cookers, and periscopes.
• Future video will cover questions and answers on reflection of light.