Physics Class 9 Unit 5 L-1 | Why Deformation in Solids? | Hookes Law Proof + Applications |FBISE NBF

Описание: Welcome to Lecture 1 of Physics 9th Class - NBF | Chapter 5: Pressure and Deformation in Solids (FBISE New Book) on Concept & Exam!

Topics covered in this Lecture:
🔹 Lecture 1: Deformation in Solids
• Detailed explanation of the chapter title
• Why deformation occurs only in solids
• Concept of Elasticity explained in detail
• Hooke’s Law (Statement + Mathematical Proof)
• Applications of Hooke’s Law:
  – Balance wheel in watch
  – Spring scale to measure weight
  – Hair spring of galvanometer
• Most Important Board Question:
  – Weight measured by two spring scales hanging in parallel
   Case 1: When mass of scales is ignored
   Case 2: When mass of scales is considered
This lecture builds your concepts step by step and prepares you for board numericals.

This playlist covers all key topics of Chapter 5 with clear explanations, important formulas, solved numericals, and step-by-step problem-solving techniques. Perfect for students of 9th Class (FBISE) preparing for Board Exams, Entry Tests, or O/A-Level equivalence.

Subscribe to Concept & Exam for chapter-wise tutorials, examples, and exam strategies!

“Special acknowledgment to my respected teacher Sir Qaiser Chughtai for inspiring my understanding of Physics concepts.”

#Class9Physics
#PhysicsChapter5
#PressureandDeformationinSolids
#DeformationInSolids
#HookesLaw
#ApplicationsofHookesLaw
#BalanceWheel
#Elasticity
#SpringBalance
#Galvanometer
#PhysicsForBeginners
#FBISE
#NBF
#BoardExams
#Olevel
#Physics2025
#Physics2026
#ConceptandExam
#PhysicsConcepts
#PhysicsForBoardExams
#ConceptBasedPhysics
#NumericalsMadeEasy
#ExamPreparation