A particle of charge equal to that of an electron - e, and mass 208 times the mass of electron (called a mu meson) moves in a circular orbit around a nucleus of charge` + 3e` (Take the mass of the nucleus to be infinite) Assuming that the bohr model of the atom is applicable to this system
(i) Derive an expression for the radius of the bohr orbit
(ii) find the value for which the radius is approximately the same as that of the bohr orbit fo the hydrogen atom
(iii) find the wavelength of the radiation emitted when the mu- meson jump from the third orbit of the first orbit