Author Question: Photons of wavelength scatter elastically from protons at rest. The wavelength of photons scattered ... (Read 93 times)

Bernana · **on:** Jul 28, 2018

Photons of wavelength scatter elastically from protons at rest. The wavelength of photons scattered at 90 is increased by:
1./137
2.h/2c
3.h/(mec)
4.h/(mpc)
5. cos(45)
6.None of the above

Question 2

An interpretation of the photoelectric effect is that:
1.Light is emitted only when electrons change orbits.
2.Light has a wavelike character.
3.Light is absorbed in quanta of energy E = h
4.Electrons have an associated wave having wavelength = h/p.
5.Photons must have some minimum energy to penetrate a material.
6.More than one of the above