A photon of frequency f undergoes Compton scattering from an electron at rest and scatters through an angle f. The frequency of the scattered photon is f′. How is f′ related to f ? Does your answer depend on f? Explain.
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A photon of frequency f undergoes Compton scattering from an electron at rest and scatters through an angle f. The frequency of the scattered photon is f′. How is f′ related to f ? Does your answer depend on f? Explain.
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- A. Electrons are ejected from a metal surface with speeds ranging up to 4.72E+5m/s when light with a wavelength of lambda = 650nm is used. What is the work function (in eV) of the surface? B. What is the cutoff frequency for this surface?A beam of electrons is accelerated from rest through a potential difference of 0.100 kV and then passes through a thin slit. When viewed far from the slit, the diffracted beam shows its first minimum at ± 14.6° from the original direction of the beam. A) What is the velocity of the electrons? B) What is the de Broglie wavelength of the electrons?A parallel beam of 500-keV photons is normally incident on 0.8 cm sheet of lead (density = 11.4 g/cm³) at a rate of 2x10 photns/sec. µ/p = 0.16 cm²/g, Hen/p = 0.09 cm²/g, H/p = 0.11 cm²/g What is the fraction of photons transmitted without interaction? Choose. + What fraction of the transmitted energy is due to uncollided photons? Choose... What fraction of the initial kinetic energy transferred to the electrons is emitted as Bremsstrahlung? Choose...
- In a Compton scattering experiment, an x-ray photon scatters through an angle of 22.6° from a free electron that is initially at rest. The electron recoils with a speed of 1,720 km/s. (a) Calculate the wavelength of the incident photon. nm (b) Calculate the angle through which the electron scatters. OA laser emits a beam of green visible light of wavelength 550 nm. When the beam strikes the surface of a metal, electrons are ejected from the surface. Which of the following statement(s) is/are INCORRECT? Check all that apply. Explain your reasoning for all choices. a) If the green laser emits twice the number of photons per second, the electrons will be ejected from the surface with twice the kinetic energy. b) If the green laser emits twice the number of photons per second, the number of electrons ejected per second from the surface will double. c) For the given green laser, replacing the metal surface with another metal of lower work function (binding energy) will increase the kinetic energy of the ejected electrons. d) For the given green laser, replacing the metal surface with another metal of lower work function (binding energy) will decrease the kinetic energy of the ejected electrons. e) For the given green laser, replacing the metal surface with another metal of lower work…Which of the following statements are true? Choose all that apply. A photon has kinetic energy. O Electrons have a positive charge. If photon A has a larger momentum than photon B, photon A must be moving faster than photon B. Hotter objects have a larger peak frequency. Increasing the light intensity on a piece of metal will increase the maximum KE of the ejected electrons (assuming f > fo). If an electron drops down to the ground state, a photon will be emitted.
- Introduction to Optics; A certain sensitive radar receiver detects an electromagnetic signal of frequency 100 MHz and power (energy/time) 6.63 x 10-16 J/s How many visible (λ=555 nm) photons/s would correspond to a detected power of 6.63 x 10-16 J/s? What is the energy (in J and in eV) of an X-ray of wavelength 0.1 nm?what is the speed of an electron that has the same momentum as a photon with a wavelength in vacuum of 488 nm? The mass of an electron is 9.11 × 10^–31 kg.K 1...
- In a Compton scattering experiment, an x-ray photon scatters through an angle of 15.0° from a free electron that is initially at rest. The electron recoils with a speed of 2,200 km/s. (a) Calculate the wavelength of the incident photon. nm (b) Calculate the angle through which the electron scatters. OYou have a sample of Sodium with a Work Function of 2.28 eV that you are shining light upon to demonstrate the Photoelectric Effect. Which type of light would be the lowest Energy that would still work? [If visible light, state the color.] How fast will an electron be ejected from the sample material if we use UV light of wavelength of 10.0 nm? m/sAn electron is trapped in a is absorbed, the electron is in the n = 6 energy level. What was the wavelength of the absorbed photon? one-dimensional box that is 501 nm wide. Initially, it is in the n = 3 energy level but, after a photon wavelength: Eventually, the electron ends up in the ground state. As it does so, one or more photons are emitted during those transitions. Find the wavelengths of the least energetic and most energetic photons that might be emitted during all the possible transitions to the ground state. wavelength of least energetic photon: m wavelength of most energetic photon: m m