Скачать или смотреть Diffraction of Light by Diffraction Grating | Class 12 Physics Ch 18 | Federal Board NBF Book 2025

Diffraction of Light by Diffraction Grating | Class 12 Physics Ch 18 | Federal Board NBF Book 2025
Chapter 18: Diffraction and Interference | Class 12 Physics (NBF Book 2025)
Topic 18.2: Diffraction Grating | Subtopic: Diffraction of Light by Diffraction Grating

Welcome to the Class 12 Physics Lecture Series based on the NBF Book (Federal Board New Syllabus 2025).
In this video, we explain Diffraction of Light by a Diffraction Grating, a key part of Topic 18.2 – Diffraction Grating.

📌 What You’ll Learn in This Lecture:

What is Diffraction of Light?

Structure of a Diffraction Grating

Principle of Superposition in Grating

Condition for Principal Maxima (nλ = d sinθ)

Formation of Bright and Dark Fringes

Difference Between Single Slit Diffraction & Grating Diffraction

Applications of Diffraction Grating (Spectroscopy, Wavelength Measurement)

💡 This is one of the most important board exam topics. A full conceptual explanation with easy language is given for both Urdu/Hindi and English medium students.

📚 Based on NBF Federal Board Physics Book 2025 Edition – aligned with the latest FBISE exam pattern.

🎓 Chapter 18: Diffraction and Interference includes:
🌊 Young’s Double Slit Experiment (Interference)
🔦 Diffraction at a Single Slit
🕳️ Diffraction of Light by Diffraction Grating
🌈 Applications of Interference & Diffraction

👉 Make sure to watch the full chapter playlist for complete preparation.

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