(a) Find the frequencies of revolution of electrons in n = 1 and n=2 Bohr orbits.
(b)What is the frequency of the photon emitted when an electron in an n=2 orbit drops to an n=1 hydrogen orbit?
(c )An electron typically spends about `10^(-8)s in an excited state before it drops to a lower state by emitteing a photon. How many revolutions does an electron in an n=2 Bohr hydrogen orbit make in `100xx10^(-8)` s?.