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D2L Private Discussions - Ahmad Sarv X D2L Assignment - Module 6 - Physics X P30Module6Assignment.pdf X P30Module5Assignement.pdf Dashboard X + V X C d21.cbe.ab.ca/content/enforced/940046-cbel2122winphysics30slkrausnick 1/AssignmentsF2020Booth/P30Module6Assignment.pdf?_&d21SessionVal=BONfQgDiDqdWL4fWXY1q7LOSj&ou... L 0 A E P30Module6Assignment.pdf 1 / 3 100% + Provide your solutions on a separate sheet of paper and submit all pages combined as a PDF file. Note that the answers are provided in brackets after the question for calculation based questions. Since you are given the correct answer, showing ALL steps required for a complete solution is mandatory for marks. To earn full marks you need to: . Write what is given and required or provide a labeled diagram . Write the Formula and rearrange if necessary . Substitute into the formula and include units . State your answer with correct sig digs . Answer short answer questions with full sentences Lesson 1: Blackbody radiation 1. What is the energy (in Joules and ev) of a radio wave photon with a frequency of 100.7 MHz? (6.67 x 10-26 J, 4.17 x 10" ev ) 2. What is the energy of a photon of blue light which has a wavelength of 450 nm? (4.42 x 10-19 J) 3. What is the frequency of a quantum of EMR whose energy is 1.0 MeV? What type of EMR is this? (2.4 x 1020 Hz) 2 4. A red neon laser has a wavelength of 632.8 nm. If the power of the laser is 1.50 mW, how many photons are being emitted per second? (4.77 x 1015) 5. A regular light bulb is about 5.0% efficient in producing light energy from electrical energy. How many photons are released per second by a 50 watt light bulb if the average wavelength emitted is 500 nm? (6.3 x 1018) 6. When prints are developed in a darkroom, a red light bulb may be used for certain types of film. Why does the red light not affect the photographic film? 7. What can you say about the relative temperatures of reddish, bluish, and whitish-yellow stars? 3 8. If all objects radiate energy, why can't we see them in the dark? 9. Describe what we mean by a "particle"; by a "wave." 10. What are the differences between electrons and photons? Be specific. 14 C 9:12 PM Sunny N ? ENG US 2022-06-15 21g P30ModuleAsslgnmentpdf C le Ebeal :a PSOModuleAssignm pdf 100% + E] Lesson 2: The photoelectric effect 11. Monochromatic light of wavelength 500 nm falls on a metal cathode to produce photoelectrons. The intensity of the light at the metal surface is 100 Joules/mzls. a. What is the energy of a single photon of this light? (3.98 x 10'19 J] b. How many photons fall on one square meter in one second? (2.51 x 10\") c. If the cathode is a square which is 5.00 cm on a side, how many electrons are being released per second, assuming that every photon releases one photoelectron? How big a current would this produce? (6.28 x 10\g P30ModuleAsslgnmentpdf C le Ebeal :a PSOModuleAssignm pdf 100% + E] 17. Radiation with a frequency of 752 TH: is used to illuminate a photoelectric sun'ace. If the work function is 2.20 eV, what retarding voltage must he applied to reduce the photocurrent to zero? [0.516 V] Lesson 3: The Compton Effect 18. In any elastic collision, what two things are conserved? 19. How did Compton explain that photons have a momentum if they have no mass? what is the mass equivalent of a photon? . Discuss how Compton scattering shows that it is impossible to \"see" an electron without disturbing the electron. . What is the momentum ofa photon with a frequency of 9.65 x 10" Hz? (2.13 x 10'27 kg'm/s) . If the energy of a photon is 225 kev, what is its momentum? (1.20 x 10'22 kg'm/s) . A photon with a wavelength of 2.00 x 10'\" m collides with a stationary electron. As a result the electron moves off with a speed of 2.90 x 107 m/s. What is the wavelength and angle of the scattered photon? (2.08 x 10'\" m, 48.0\"] . A photon with a wavelength of 2.300 x 1 '11 rn collides with a stationary electron. If the scattered photon has a lreCIuency of 1.154 x 10\" Hz, what is the resulting speed of the electron? (4.58 X 107 m/S) . An x-ray collides with a stationary electron. What is the change in the wavelength of an x-ray if it is scattered through an angle of 120'? (3.64 x 10'12 m) CBe-Learn Physics 30 Module 6 Assignment November 2020