ATOMIC PHYSICS FORMULAE:Atomic Physics is one of the easiest Chapters of JEE syllabus. So, XI std students, make thorough these formulae.Written after the request of Ishan.Maheswari.1) De Broglie's Eqn.: (Wave particle duality)= h/mv2)Plank's eqn.E= h=hc/3)Bohr's Conditions:i)mvr=nh/2ii)E2-E1=h4) Radius of nth orbit:rn= n2 * 0.53 *10 -10 m5) Energy of nth orbit:En= -13.6/n2 eV 1eV= 1.6 * 10 -19 J6)Frequency of Spectral lines:-1 =R [n1 -2 -n2 -2] R=Rydberg's Constant = 1.094 * 10 -7 m -1For Lyman, Balmer, Paschen, Brackett, Pfund Series, n1= 1,2,3,4,5. n2>n17) Photo-electric Effect:h=ho + mv2/2 ,where, ho = W =Work function. o = Threshold (min.)freq.(Point out any mistakes and rate me if u find this useful)

Shane Macguire , 10 Years ago

Grade upto college level