Numerical Response #5 A photoelectric apparatus is set up so that when a particular frequency of light shines on the metal, electrons are emitted with a certain kinetic energy. Students discuss possible changes to the apparatus and the predicted result of the changes. Change to the apparatus Result of the change 1 Use light of a greater 4 There will be more electrons emitted intensity 5 There will be fewer electrons emitted 2 Use light of a higher 6 There will be no change to the number of electrons emitted frequency 7 Electrons will be emitted with a higher kinetic energy 3 Use a metal that has a Electrons will be emitted with a lower kinetic energy lower work function 9 There will be no change to the kinetic energy of the electrons emitted Choose two different changes to the apparatus (from the "change" list) and a correct result of each change (from the "result" list). There are several correct answers to this question. First change to Result of the Second change to Result of the the apparatus first change the apparatus second change (Record the four digits on your Scantron) 14. Photoelectrons with a maximum kinetic energy of 4.0 ev are ejected from a metal surface by incident light that has a wavelength of 2.0 x 10 m. The work function of this metal is: how ofT el A. 2.2 eV B. 4.0 eV C. 3.5 eV D. 1.1 eV hou 15. The momentum of a photon is 2.23 x 10-38 kg.m/s. Its frequency must be: A. 9.91 x 10-5 Hz. B. 1.01 x 104 Hz C. 2.97 x 104 Hz. D. 3.36 x 10 5 Hz