Question: 7. [-/2 Points] DETAILS MY NOTES SERPSE10 39.2.0P.010. ASK YOUR TEACHER PRACTICE ANOTHER Light with wavelength A = 605 nm is incident on a metallic

7. [-/2 Points] DETAILS MY NOTES SERPSE10 39.2.0P.010. ASK YOUR TEACHER PRACTICE ANOTHER Light with wavelength A = 605 nm is incident on a metallic surface. Electrons are ejected from the surface. The maximum speed of these electrons is v = 4.50 x 10 my/s. (a) What is the work function of the metal (in eV)? ev (b) What is the cutoff frequency for this metal (in Hz)? ( Hz Need Help? 8. [-/3 Points] DETAILS MY NOTES SERPSE10 39.2.P.011. ASK YOUR TEACHER PRACTICE ANOTHER Aluminium has a work function of 4.08 eV. (a) Find the cutoff wavelength and cutoff frequency for the photoelectric effect. wavelength nm frequency ( Hz (b) What is the stopping potential if the incident light has a wavelength of 157 nm? |V Need Help? 9. [-/3 Points] SERPSE10 39.2.P.013. ASK YOUR TEACHER PRACTICE ANOTHER The work function for sodium metal is 2.46 eV. (a) Find the cutoff wavelength for sodium metal. Jnm (b) What is the lowest frequency of light incident on sodium metal that releases photoelectrons from its surface? Hz (c) If photons of energy 4.38 eV are incident on sodium metal, what is the maximum kinetic energy of the ejected photoelectrons? eV Need Help? Submit

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