p2f07_lec22_matter_waves - Discussion questions on photons...

Info iconThis preview shows pages 1–5. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Discussion questions on photons 1 Of the following statements about the photoelectric effect, which are true and which are false? (a) The greater the frequency of the incident light is, the greater is the stopping potential. (b) The greater the intensity of the incident light is, the greater is the cutoff frequency. (c) The greater the work function of the target material is, the greater is the stopping potential. (d) The greater the work function of the target material is, the greater is the cutoff frequency. (e) The greater the light frequency is, the greater is the maximum kinetic energy of the ejected electrons. (f) The greater the energy of the photons is, the smaller is the stopping potential. 2 If you shine ultraviolet light on an isolated metal plate, the plate emits electrons for a while. Why does it eventually stop emitting electrons? 3 In the photoelectric effect (for a given target and a given frequency of the incident light), which of these quantities, if any, depend on the intensity of the incident light beam: (a) the maximum kinetic energy of the electrons, (b) the maximum photoelectric current, (c) the stopping potential, (d) the cutoff frequency? Physics 2 Class 22 notes 2007 Matter Waves, (therefore waves matter). Issues with light Simple experiments tell us that light has both wavelike and particle-like behavior *The photoelectric effect (particle-like) *Double slit interference (wave-like) X-ray diffraction (wave-like) The Compton effect (particle-like) Photon counting experiments (particle-like) * Youve done/seen these experiments X-ray Diffraction Pattern A diffraction pattern is observed when x-rays of many wavelengths are incident on a crystal and diffraction can therefore occur from many planes simultaneously....
View Full Document

Page1 / 23

p2f07_lec22_matter_waves - Discussion questions on photons...

This preview shows document pages 1 - 5. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online