Radioactivity Class 12 (Urdu Hindi) || Alpha, Beta and Gamma Radiation

To download notes and past papers please visit https://baseacademy.pk/ for lecturer and educators job preparation please contact 0340-6582200 In this video, I'm teaching about Radioactivity in Class 12 (Urdu Hindi) || Alpha, Beta and Gamma Radiation . I am covering topics such as types of radioactive elements, how radioactive elements decay and how radiation interacts with matter. This video is aimed at Class 12 (Urdu Hindi) students of Urdu Medium Schools across Pakistan. Radioactivity, property exhibited by certain types of matter of emitting energy and subatomic particles spontaneously. It is, in essence, an attribute of individual atomic nuclei. An unstable nucleus will decompose spontaneously, or decay, into a more stable configuration but will do so only in a few specific ways by emitting certain particles or certain forms of electromagnetic energy. Radioactive decay is a property of several naturally occurring elements as well as of artificially produced isotopes of the elements. The rate at which a radioactive element decays is expressed in terms of its half-life; i.e., the time required for one-half of any given quantity of the isotope to decay. Half-lives range from more than 1024 years for some nuclei to less than 10−23 second (see below Rates of radioactive transitions). The product of a radioactive decay process—called the daughter of the parent isotope—may itself be unstable, in which case it, too, will decay. The process continues until a stable nuclide has been formed. The emissions of the most common forms of spontaneous radioactive decay are the alpha (α) particle, the beta (β) particle, the gamma (γ) ray, and the neutrino. The alpha particle is actually the nucleus of a helium-4 atom, with two positive charges He. Such charged atoms are called ions. The neutral helium atom has two electrons outside its nucleus balancing these two charges. Beta particles may be negatively charged (beta minus, symbol e−), or positively charged (beta plus, symbol e+). The beta minus [β−] particle is actually an electron created in the nucleus during beta decay without any relationship to the orbital electron cloud of the atom. The beta plus particle, also called the positron, is the antiparticle of the electron; when brought together, two such particles will mutually annihilate each other. Gamma rays are electromagnetic radiations such as radio waves, light, and X-rays. Beta radioactivity also produces the neutrino and antineutrino, particles that have no charge and very little mass, symbolized by ν and ν, respectively. #BaseAcademyPhysics #12thClassPhysics #AdeelAkhtar #NuclearPhysics Previous Videos Mass Defect and Binding Energy in Urdu Hindi 👉   • Mass Defect and Binding Energy in Urdu Hin...   Mass Spectrograph in Urdu Hindi 👉   • Mass Spectrograph Class 12 [Urdu Hindi]   #radioactivity #alpharays #betarays #gammarays #nuclearphysics