Mass Defect & Numerical Explained | Class 12 Physics Chapter (Nuclear Physics) FBISE, CBSE, NCERT

In this lecture, we explain the concept of Mass Defect in Class 12 Physics Chapter "Nuclei" according to FBISE, CBSE, NCERT, and PECTA syllabus.

You will learn:
✔ What is Mass Defect?
✔ Why mass is lost in nucleus formation
✔ Relation between mass defect and binding energy
✔ Important formulas and derivations
✔ Numerical problems for board exams

This lecture is specially designed for students of:
- FBISE (Federal Board Pakistan)
- CBSE (India)
- NCERT Physics Class 12
- PECTA Punjab Boards

📌 Keywords Covered:
mass defect class 12 physics
binding energy class 12
mass defect numericals
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mass defect explained in urdu/hindi

⏱ Timestamps:
00:00 Introduction
01:20 What is Mass Defect
05:00 Formula and Explanation
08:30 Binding Energy Relation
12:00 Numericals
15:00 Exam Tips

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