Saved Bookmarks
| 1. |
(i) State Bohr's quantisation condition for defining stationary orbits. How does de-Broglie hypothesis explain the stationary orbits ? (ii) Find the relation between the three wavelengths, lambda_(1),lambda_(2) and lambda_(3)from the energy level diagram shown here. |
|
Answer» Solution :(i) See ShortAnswer Question Number 29. (ii)LET energy of electron corresponding to LEVELS A, B and C by `E_(A)` , `E_(B)` and `E_(C)` RESPECTIVELY . Then `E_(C) - E_(B) = (HC)/(lambda_(1)) ""…(i) E_(B) =E_(A) = (hc)/(lambda_(2)) ""......(ii) and E_(C) -E_(A) =(hc)/(lambda_(3))"".......(iii) ` On adding(i) and (ii), we get . `E_(C) = E_(A) = (hc)/(lambda_(1)) + (hc)/(lambda_(2))"".......(iv)` Now comparing(iii) and (iv) , we findthat . `(1)/(lambda_(3)) = (1)/(lambda_(1)) + (1)/(lambda_(2))` 
|
|