Question

wht r the cnditns whn electron emits light and when it emits heat on coming frm exctd to ground state nd also give sme eg plzz?? also cmmnt abt switching frequency of both type of these materials...

Answer 1

electrons changes their shell when absorbs photons. and emits photon when comes toward ground level which causes light.
most important is heat is kinetic energy among atom of particular piece of matter. or it can be said that its the amount of speed on which atoms are clashing with each others.

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