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Bohrs Atomic Model

Bohrs Atomic Model Scientist Neils Bohr gave some corrections to Rutherford's atomic model in 1913. This corrected model is called the Bohr's atomic model. The main postulates of this model are - a) The electron moves around the nucleus in a circular motion, about an axis. This circular motion is called an energy level or orbit. They are also known as the shell or permanent orbit or principal energy level. Electrons do not absorb or emit any energy when they revolve these fixed orbits. If we express the permanent orbit as n, then n = 1, 2, 3, 4, etc.  In other words, if n = 1, the principal energy level is K,  when n = 2, L is the principal energy level,  when n = 3, M is the principal energy level,  when n = 4, N is the principal energy level, etc. b) According to Bohr's model, the angular momentum of an electron in an energy level is mvr =  nh / 2𝜋 . Here, m = the mass of the electron (9.11×10 -31  kg) r = the radius of the orbit that the electron follows v = the veloc

Modern Physics and Electronics

Physics

Chapter - 13: Modern Physics and Electronics

👉 All Chapter Contents 👈 


  • 13.1 Radioactivity
  • 13.2 Development of Electronics
  • 13.3 Analog and Digital Electronics
  • 13.4 Semiconductor
  • 13.5 Information and Communications Technology
  • 13.6 Internet and E-mail
  • 13.7 Effective Use of ICT


Question Bank

13.1 Radioactivity


13.2 Development of Electronics


13.3 Analog and Digital Electronics


13.4 Semiconductor


13.5 Information and Communications Technology


13.6 Internet and E-mail


13.7 Effective Use of ICT



Secondary Physics


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