Expression of Formation Of Drops & Bubbles XII PHYSICS

-


 

Comments

Post a Comment

Popular posts from this blog

2026 Preparation Strategy / Paper Pattern & Strategy

-
  2026 Paper Pattern & Strategy Chapter Marks (Without Option) Marks (With Option) Priority Rotational Dynamics 5 7 High (Derivations) Thermodynamics 5 7 High (Processes) Wave Optics 5 7 High (Diagrams) Mechanical Prop. of Fluids 5 7 High (Concepts) Electromagnetic Induction 5 7 High (AC/Lenz) Modern Physics  (Ch 14-16) 12 16 High (Scoring/Theory) The paper is designed for 70 Marks (Theory) and 30 Marks (Practicals). Question Type Number of Questions Total Marks Section A (MCQ & VSA) 10 MCQs + 8 VSA 18 Section B (Short Answer I) 8 out of 12 16 Section C (Short Answer II) 8 out of 12 24 Section D (Long Answer) 3 out of 5 12 Section A  (MCQ & VSA)      Page 3 - 6 Section B  (Short Answer I)     Page 7 - 10 Section C  (Short Answer II)     Page 11 - 20 Section D  (Long Answer)         Page 21 - 28 Section A:  MCQs & Very Short Answers (1 Mark each) Definitions: De...
Read more

12 physics Activity: To Study the Variation of Potential Drop

-
Image
  Activity: To Study the Variation of Potential Drop Along a Uniform Wire Using a Potentiometer Aim To study the variation of potential drop with length of a uniform wire and hence verify the principle of a potentiometer. Apparatus Required Potentiometer, driver cell (battery), rheostat, galvanometer, jockey, given cell, key, voltmeter (optional), connecting wires. Principle A potentiometer works on the principle that the potential drop across a uniform wire carrying steady current is directly proportional to its length . Mathematically: V ∝ l or V = k l where: V = potential drop l = length of wire k = potential gradient (potential drop per unit length) Theory When a steady current flows through a uniform potentiometer wire, the potential drop along the wire is uniform. Using the null deflection method, the potential difference across a cell can be measured accurately without drawing any current from it. This ensures high accuracy. The principle is verified by showing that the rati...
Read more