Structure of a Liquid in Glass Thermometer (7.5) | 9th Class Physics | Urdu/Hindi

Liquid in glass thermometer class 9 physics, structure and working of thermometer, chapter 7 thermal properties of matter, Sir Tanveer lecture, Student Physics Academy In this video, Sir Tanveer explains the structure of a liquid-in-glass thermometer (7.5) from Class 9 Physics Chapter 7 – Thermal Properties of Matter. This lecture covers the construction, parts, principle, and working of a liquid in glass thermometer in simple Urdu/Hindi explanation so every 9th class student can easily understand the concept for board exams. You will learn the important parts of the thermometer including the glass bulb, capillary tube, scale, and thermometric liquid (mercury or alcohol) along with how temperature is measured through thermal expansion of liquids. This topic is highly important for short questions, long questions, and conceptual board exam preparation 2025 for all Punjab boards including Lahore, Faisalabad, Multan, Gujranwala, Rawalpindi, Sargodha, and others. This lecture is explained in an easy classroom style with concept clarity, diagrams, and exam-focused points to help students prepare smartly. Topics Covered: Structure of liquid in glass thermometer Parts of thermometer Bulb and capillary tube function Mercury vs alcohol Principle of thermal expansion Working of thermometer Board exam important questions For more Class 9 Physics Lectures, subscribe to Student Physics Academy by Sir Tanveer. #Class9Physics #9thClassPhysics #PhysicsLecture #LiquidInGlassThermometer #ThermometerStructure #ThermometerWorking #Chapter7Physics #ThermalPropertiesOfMatter #PunjabBoard #SirTanveer #StudentPhysicsAcademy #BoardExamPreparation #PhysicsNumericals #Class9Science #PhysicsConcepts #MercuryThermometer #AlcoholThermometer #ExamPreparation2026