4. If the incident photon has energy E (or hv), what is the maximum possible kinetic energy imparted to the scattered electron? At what angle o does this electron scatter?

7. The X-rays detected at a scattering angle of 0 = 65° in the figure have a wavelength of 1.90 nm. What is the kinetic energy of the recoil electron. Recoil Electron electron at rest Incident X-ray photon Scattered X-ray photon 19 0of19 oof19 oofig oof19 0of19 oof19 0of19 0 of19 0of19

3

The photoelectric work function for a metal is 2 eV. When light of wavelength 4800 A falls on this metal. Calculate the maximum K.E. possible for a photoelectron.

3. Find the energy of the scattered photon, the electron's kinetic energy, and Compton's shift of a wavelength of 0.01 Å when scattering at angle 70° where: h = 6.62×1034 & mo = 9.11×1031 & c = 3x108 4. Find the positron scattering angle, if the incident photon has frequency 3x 1022 Hz where: h = 6.62x1034 & mo = 9.11×10-31 & c = 3x108

Estimate the binding energy of electrons in magnesium, given that the wavelength of 337 nm is the longest wavelength that a photon may have to eject a photoelectron from magnesium photoelectrode. Electrons are bound to the magnesium with potential depth of at least eV.

A photon of frequency f undergoes Compton scattering from an electron at rest and scatters through an angle f. The frequency of the scattered photon is f′. How is f′ related to f ? Does your answer depend on f? Explain.

Light of wavelength > light. = 5.34 × 10¹¹m is incident on an electron and undergoes Compton scattering at an angle of 0 = 13.1° from the direction of the incident What is the magnitude of the momentum of the scattered photon? ×10-25 Js/m

5. What are the kinetic energy and the speed of an electron ejected from a sodium surface whose work function is W0 = 2.28 eV when illuminated by light of wavelength (a) 410 nm and (b) 550 nm?