Question

The photoelectric effect cannot be explained using classical mechanics but can be understood using quantum mechanics. Describe briefly (a) why a classical description of the photoelectric effect is wrong and (b) how a quantum mechanical description is correct

Answer 1

This is my final answer.

后ilure of class cal. Physics.to erRlain Photoelectric effect . () Glassical physical could not expdam tihe pheno min4 telated to atomic dlomain. i Iu coud not explan the hycrogen epecdine Cii) Thüis theory was nod able to explain the stability of atom The enormous iange of cenductivi ty. of metals compied to ingulators also couwd od be exphaned The ange magnekic suscepdibr Jity is also very Jarge. Tue cwas also not eapJained vi) classical coud not explain he emistion of a falpha) emu ssion of α(alpha) xpdaindhe Paurdicle fiom a nuclus desaib of dhe foct that d has tinsu ficient energy tvi) The Gpecitic heat variation uith the demperature uns ao not explain by she calassi cal heoy (vi) B lack body nediation, compten effet eas not sucefuly exphaind b clasical heorg Corect dlescripdton of quandum machnics 1リ By quandum machancs, we observed that all dded semid energ in she form o electromagnedtic waveg, These waves core produced by she osicillationf cherges found in atom and moderces t) The ene associeted oidh atomuc and molecuby osci lations is quandised shat is his eny t e on iniegen maltiple of h moleculai u iven b hf. These discrede bids of energe becomes mow an ony b tii) The energ Jin She form of dight ib emited bq tw) Hight 13 emuitled in she form ot packed or quente of energ ( eshenJght Shuines on melal 3erfoce eledrong ove vibration Jo the and hus Jeel quondkm dheory o dishof phodon aie emidted