Fraunhofer’s lines Fraunhofer’s lines, also known as absorption lines, are dark lines that appear in the spectrum of sunlight or starlight. Joseph von Fraunhofer, a German physicist and optician, observed and studied these lines in the early 19th century. The…
Nuclear reactor A nuclear reactor is a device in which nuclear fission reactions can be carried out through a sustained and controlled chain reaction. In a nuclear reactor, controlled nuclear processes are used to produce heat, which is then transformed…
Laws of radioactivity The behavior of radioactive materials and radiation emissions are governed with the fundamental rules of radioactivity. The spontaneous emission of radiation from specific unstable atomic nuclei is referred to as radioactivity.Rutherford and Soddy studied the phenomenon of radioactivity…
nuclear reactions Nuclear reactions are the transformation of atomic nuclei from one type of nucleus to another type when bombarded with energetic particles. In a nuclear reaction, the rearrangement of nucleons takes place when the bombarding particle strikes the target…
Radioactivity Henry Becquerel made the discovery of natural radioactivity in 1896. He discovered that exposure to double potassium and uranium sulfates causes photographic plates to become black. Becquerel came to the conclusion that uranium emits a unique type of ray…
Mass defect and binding energy Mass Defect: In the context of physics and nuclear chemistry, mass defect refers to the difference in mass between an atomic nucleus and the sum of its individual protons and neutrons (nucleons). It is a…
Radioactive decay Unstable atomic nuclei lose energy and convert into more stable nuclei through a process known as radioactive decay. During this process, radiation in the form of particles or electromagnetic waves is frequently released. This phenomenon occurs in particular types…
NCERT Solutions chapter atoms Class12 It consists of the Problems with their solutions of all the chapters like atomic models, nuclear constitution, radioactivity etc. Ques. 8.01: Choose the correct alternative from clue given at the end of each statement. *NCERT…
NCERT Solutions Chapter Atoms-B Class12 The NCERT Solutions for Class 12 Physics Chapter 12 Atoms are provided here in a comprehensive way from Ques. 8.15 onward according to the latest CBSE Syllabus 2023-24. Ques: 8.15 The total energy of the…
X-rays production and spectrum The modern X-ray tube, called as Coolidge X-rays tube, was designed by Dr. Coolidge in 1916, has vacuum inside it. Discovery of X-rays: The discovery of X-rays is an important milestone in the field of physics…
