Atoms


    Photo electric effect
  • Energy of photon, E = hn = 
  • Mass of photon, m = 
  • Momentum of photon, p = mc = 

  • Wavelength of photon, 
  • Wavelength associated with moving particle,
  • Bohr’s Theory of Hydrogen Spectrum:
    (1)    Orbital Velocity : 
    v =             
  • Radii of Orbits : 
                           
  • Time Period :
    T =                                                 
  • Energy of the Electron:

  • Kinetic energy         
  • P. E. = V × (_e)=             
  • The total orbital energy En of the electron is
    En= K. E. + P. E.     

  •           
  • Rydberg’s constant            

    Matter Waves :
  • Energy of photons                                                      
  • The momentum of the photon
  • De Broglie wavelength
                  
  • Moseley’s Law

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