Qualitative questions: Answer these questions very briefly, in just one or two s
ID: 1355003 • Letter: Q
Question
Qualitative questions: Answer these questions very briefly, in just one or two sentences each. If you write more than that I might assume that you don’t really know the answer.
1.What principle(s) does the Franck-Hertz experiment demonstrate?
2.What is the basic error of the plum pudding model?
3.What is the nature of the spectrum predicted by classical physics for an electron moving in a circle around a positive charge?
4.Explain the relationship between the energy density of electromagnetic radiation in this room and the energy emitted by a black wall at the room’s temperature.
Explanation / Answer
1.
Franck-Hertz experiment demonstrate the concept of quantization of energy levels
2.
Plum pudding model assumed that atoms are composed of electrons and are surrounded by positive charge which is a basic error.
3.
classical physics expect that the electron would radiate energy and spiral into the nucleus.
4.
Energy emitted is an function of Temperature such that energy is directly proportional to temperature raised to the power of 4. whatever the body is