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🔴 Visualizing Refraction of Monochromatic Light through a Glass Prism | Class 10 Physics | CBSE Chapter - Human Eye and the Colourful World

📌 Topic Covered in This Video:
In this engaging and practical video, we demonstrate how monochromatic light (laser beam) bends when it passes through a glass prism, helping you clearly understand the concept of refraction and the bending of light. Using simple tools like a laser pointer, a triangular glass prism, a white sheet of paper, and drawing pins, we bring the classroom concept into real-world visualization.

🎯 What You Will Learn:
✅ Refraction of light through a prism
✅ How monochromatic light bends due to different media
✅ Concept of angle of incidence, angle of refraction, and angle of emergence
✅ Practical understanding of light deviation through a prism
✅ Step-by-step guide to perform this activity at home or in school lab
✅ Drawing the outline of the prism using drawing pins and observing light path

📘 Chapter Name: The Human Eye and the Colourful World
📚 Subject: Physics
🎓 Class: 10 (CBSE Board & other State Boards)

🔬 Materials Used in This Activity:
Triangular glass prism
Laser pointer (preferably red/green laser – monochromatic light)
White A4 sheet or chart paper
Drawing pins or pushpins
Pencil or pen for drawing outlines
Dark room or shaded area for better visibility of laser path

🧪 Scientific Concept Behind the Activity:
When a monochromatic light ray (single wavelength) enters a glass prism, it undergoes refraction—a change in direction due to a change in medium (from air to glass and again from glass to air). Unlike white light which disperses into seven colours, monochromatic light doesn’t split. However, it still bends because of the difference in optical density of the media.

In this activity, you will visualize how the light ray bends twice:
1. At the first surface (Air to Glass): Bends towards the normal
2. At the second surface (Glass to Air): Bends away from the normal

This causes the overall deviation of light from its original path. By tracing the ray path, you’ll see the incident ray, refracted ray, and emergent ray – forming a Z-like pattern through the prism.

💡 Why is This Experiment Important?
✔ Builds conceptual clarity through hands-on demonstration
✔ Helps in exam preparation (CBSE Class 10 Board)
✔ Makes it easier to draw ray diagrams and understand prism-based questions
✔ Encourages curiosity and visualization in Physics

📝 Watch this video if you are looking for:
🔍 Refraction of light through prism explained with laser
🔍 Activity-based learning of refraction
🔍 CBSE Class 10 Physics practical-based concepts
🔍 Chapter – The Human Eye and the Colourful World explanation
🔍 Simple science experiment using laser and prism
🔍 Visual demonstration of light bending in glass
🔍 DIY school lab activity on prism
🔍 How to trace path of laser light through a prism

📈 Perfect for:
🎒 Class 10 Students (CBSE/ICSE/State Boards)
👨‍🏫 Physics Teachers
📹 Educational Content Creators
🧪 Science Enthusiasts
📚 Students preparing for Boards & School Projects

📎 Useful Tips:
🔸 Use a monochromatic light source (laser) for clear bending without dispersion.
🔸 Ensure the room is dark enough for visibility of the laser beam.
🔸 Secure the prism well on paper using drawing pins to avoid displacement.
🔸 Use a ruler to draw precise ray paths and measure angles if needed.

🔔 Don’t Forget to:
👍 Like the video
💬 Share your experience or doubts in the comment section
🔗 Share this with your classmates and friends
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📚 More from this Chapter:
✅ Dispersion of White Light through a Prism
✅ Formation of Rainbow
✅ Atmospheric Refraction – Twinkling of Stars & Apparent Position of Sun
✅ Tyndall Effect & Scattering of Light
✅ Colour of the Sky & Sunsets Explained

📺 Stay tuned for our full chapter playlist!

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