Using Hg gas in the Franck-Hertz experiment, approximately what range of voltages would you expect for the fi rst peak? Explain.
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Using Hg gas in the Franck-Hertz experiment, approximately what range of voltages would you expect for the fi rst peak? Explain.
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- The Balmer series, or Balmer lines in atomic physics, is one of a set of six named series describing the spectral line emissions of the hydrogen atom. The Balmer series is due to transitions of electrons to the energy level with n=2. Using the ideas and treatment seen in class, find the three largest wavelengths corresponding to lines of the Balmer series. Express your results in nm.Q2:. (a) For a free electron with a velocity of lo' cm/s, what is its de Broglie wavelength. (b) In GaAs, the effective mass of electrons in the conduction band is 0.063 mọ. If they have the same velocity, find the corresponding de Broglie wavelength.3. What are K,L and M lines you discovered in the Moseley's law experi- ment ? 4. What is the Duane Hunt maximum x-ray frequency of a excitation voltage V = 6kV ? 5. Draw a basic shape of the x-ray absorption spectrum of a generic element, denote the Band a lines along with Duane-Hunt cutoff
- What is the longest - wavelength line in nanometers in the infrared series for hydrogen where m = 3?The work function of a certain metal is found to be 1.82 ev. What is the stopping potential required to to stop the current in a photoelectric effect experiment if the wavelength of the incident light is 452 nm. Round your answer to 3 significant figures. Add your answerIf a metal has a work function 4.3 eV what is the minimum frequency for photo-emission?A. 3.5 x 108 HzB. 3.0 x 1010 HzC. 10.0 x 108 HzD. 1.04 x 1015 HzE. 1.0 Hz
- Calculate the wavelength of an electron (mass= 9.109 x10-28 g) that is traveling 6.50 × 10³ m/s. i EThe work function of aluminum is 4.26 ev. What is the maximum velocity of an electron emitted from aluminum after the absorption of a photon of wavelength 117 nm. Give your answer in m/s. Round your answer to 2 decimal places. Add your answer Question 10 A photon Compton scatters from an electron. At what scattering angle for the photon will the electron acquire the largest kinetic energy? 45 degrees 90 degrees C o degress D 180 degrees