there is transition from one of the unstable orbits of definite energy to another of same energy

there is transition from one of the stable orbits of definite energy to another of lower energy.

there is transition from one of the unstable orbits of definite energy to another of higher energy

there is transition from one of the stable orbits of definite energy to another of higher energy

integral multiples of h

integral multiples of h/2(\pie)

integral multiples of h/(/pie)

continuous

40 fm

30 fm

35 fm

45 fm

is the frequency range over which an equipment operates or the portion of the spectrum occupied by the signal

is the maximum frequency at which an equipment

is the minimum frequency at which an equipment

is number of bands in the spectrum

density

volume

mass

binding energy