Chapter 38, Problem 039 Through what angle must a 160 keV photon be scattered by a free electron so that the photon loses 12% of its energy? The electron Compton wavelength is 2.43 x 10-12 m. Number Units

A photon of wavelength 200 nm is scattered by an electron that is initially at rest. Which one of the following statements concerning the wavelength of the scattered photon is true?   Question 25 options:   The wavelength is zero nm.    The wavelength is greater than 200 nm.   The wavelength is 200 nm.    The wavelength is less than 200 nm,   The wavelength is less than 100 nm but greater than zero.

If a photon of wavelength 0.0665 nm hits a free electron and is scattered at an angle of 35◦ from its original direction, findat. the change in wavelength of this photon,b. the wavelength of the scattered photon,vs. the change in energy of the photon (is it a loss or a gain?), and d. the energy gained by the electron.

For light with a wavelength of 350 nm and with an intensity of /= 10-8 W/m², what is the number of photons/(m²s) in the light beam?

Tantalum has a work function of 4.2 eV. The most energetic photoelectron has KE of 2.12 eV. What is the wavelength of the incoming photons? a) 586 nm                            b) 197 nm                       c) 296 nm                        d) none of these.