ASSIGNMENT 12 1'35 Marks Photoelectric effect and Compton Scattering. Total 1. A photon with a kinetic energy of 51} e'y" strikes the pintoelectric surface of a metal having a Iwork function of 1.13 e'y'. Calculate the kinetic energy of the ejected photoelectron. I3 2. Photons haying energy of 3.143 at! contact the photoelectric surface of cesium metal. The work function of cesium is 2.02 e'y'. a] Determine kinetic energy of the ejected electrons in joules. \f/1 c) Indicate the physics principle you used to find the speed of the electrons. /4 3. Light with a wavelength of 530 nm is incident on a photoelectric surface of a metal with a work function of 1.40 ev. Calculate the stopping voltage required to bring the current of the cell to zero.\f45 5. An Xray with a frequency of 3.?4 X 1137-\" Hz is incident on a lhin piece of metal. The lower frequency Xray on the other side deects at 45". What is the frequency of the deflected Kray? I3 5. A stationary hydrogen atom wilh a mass of 1.6? X 102? kg absorbs a photon of light with 1G2 e'ul'. What is the velocity of the hydrogen atom after absorbing the photon if the collision is inelastic? /4.5 7. A scientist changes the frequency of an incident X-ray to 4.50 x 10" Hz and measures the deflected X-ray frequency of 4.32 x 10"Hz. What was the angle of deflection? /3 8. A Crooke's tube has a potential difference of 55.0 kV between the anode and cathode. Calculate the maximum momentum of each photon.f3 9. Nuclear fusion is a reaction that provides energy for the Sun and other stars. More than half of the energy released from fusion reactions is in the form of gamma rays. An interstellar telescope records a gamma ray with an energy of 1.00 x 103 eV. Calculate the momentum of the gamma ray