Saved Bookmarks
| 1. |
If Bohr's qunatisation postulate (angular momentum=nh//2pi) is a basic law of nature, it should be equally valid for the case of planetary motion also. Why then do never speak of quantisation of orbits of plants around the sun? |
| Answer» Solution :Bohr's quantisation POSTULATE is in TERMS of Planck's constant (h). But angular momenta associated with planetary motion are `~~10^(70)h` (for earth). In terms of Bohr's quantisation postulate, this will correspond to `n~~10^(70)`. for such large VALUES of n, the differences in successive energies and angular momenta of the quantised levels are so small, that the levels can be considered as continuous and not discreate. | |