[" Which one of the following is not the characteristic of "],[" Planck's quantum theory of radiation? "],[" (a) The energy is not absorbed or emitted in whole "],[" number or multiple of quantum "],[" (b) Radiation is associated with enitted or absorbed "],[" (c) Radiation energy is not emitted or absorbed "],[" continuously but in the form of small packets called "],[" quanta "],[" (d) This magnitude of energy associated with a quantum "],[" is proportional to the frequency "]