Physical Sciences Thermodynamic and Statistical Physics Blackbody Radiation and Planck's Distribution Law
The ultraviolet catastrophe in the classical (Rayleigh Jeans) theory of cavity radiation is attributed to the assumption that
1
the standing waves of all allowed frequencies in the cavity have the same average energy
2
the density of the standing waves in the cavity is independent of the shape and size of the cavity
3
the allowed frequencies of the standing waves inside the cavity have no upper limit
4
the number of allowed frequencies for the standing waves in a frequency range v to (v + dv) is proportional to v2