9th Class Physics English Medium Notes: 9th class Physics notes, past papers, mcqs, short questions, guess paper, urdu notes, scheme and pattern.
9th Class Physics Chapter 9 Notes, MCQs and Short Questions Heat flows from a body at higher temperature to a body at lower, temperature. There are three ways of heat transfer. These are conduction, convection and radiation. The mode of transfer of heat by vibrating atoms and free electrons in solids from hotter to colder […]
Class 9th Physics Chapter 8th Notes, MCQs and Short Questions The temperature of a body is the degree of hotness or coldness of the body. Thermometers are made to measure the temperature of a body or places. The lower fixed point is the mark that gives the position of mercury in the thermometer when it
9th Class Physics Unit 7 Notes, MCQs and Short Questions Kinetic molecular model explains the three states of matter assuming that: Matter is made up of particles called molecules The molecules remain in continuous motion Molecules attract each other. At very high temperature, the collision between atoms and molecules tears off their electrons. Atoms become
9th Class Physics Chapter 6 Notes, MCQs and Short Questions Work is said to be done when a force acting on a body moves it in the direction of the force. work = W SI unit of work is joule (J) When we say that a body has energy, we mean that it has the
9th Class Unit 5 Notes of Physics, MCQs and Short Questions Newton’s law of universal gravitation states that everybody in the universe attracts every other body with a force which is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centres. The Earth attracts a
