9Th Class Physics New Book Chapter 6 || Lecture 1, Mechanical Properties of Matter

This is the new book of class 9 physics published by pctb or punjab curriculum and textbook board lahore for all punjab boards and chapter 6 is about mechanical properties of matter and this video explains deformation of solids abd deforming force and elasticity and hooks law. #9thphysicsnew #9thpphysics