Elasticity Ended
- Tension and extension - Load-extension graph - Tensile stress - Tensile strain - Young modulus - Stress-strain graph - Hooke’s law - Determination of Young modulus of a metal using a wire - Energy stored in a stretched string Viscosity Ended
- Viscous force - Coefficient of viscosity - Poiseuille’s equation for a fluid flow - Correctness of the equation through dimensional analysis - Determination of coefficient of viscosity by using Poiseuille’s formula - Motion of an object through viscous media - Forces acting on a spherical object - Terminal velocity - Stokes’ law - Correctness of formula through dimensional analysis - Derivation of expressions for terminal velocity 1. Object moving upwards 2. Object moving downwards Surface Tension Ended
- Definition of surface tension - Angle of contact - Relationship between nature of the liquid meniscus and the angle of contact - Free surface energy - Expression for the work done in increasing the surface area of a liquid film isothermally - Relationship between surface energy and surface tension - Expression for pressure difference across a spherical meniscus - Capillary rise - Expression for capillary rise - Determination of surface tension - Using a microscope slide - Capillary rise method - Jaegar’s method Quesion Discussion Ended
Past paper question discussion - MCQs - Essays From 1990 to 2023