Which of these is a type of X-ray emitted by electrons that jump between allowed orbits in an atom? a. wriggled b. Characteristic
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QUESTION 50
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Which of these is a type of X-ray emitted by electrons that jump between allowed orbits in an atom?
a. wriggledb. Characteristic
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- 9. T/F a. Perfect absorbers of electromagnetic radiation are also perfect emitters. b. At any instant in time, it is possible to specify simultaneously the position and the momentum of a particle to arbitrarily high precision. C. The ground state is the lowest energy level in an atom. d. Certain types of sunglasses are very effective at diminishing light reflected from surfaces because of polarization. e. A light ray bends when it goes from one medium to another because of diffraction.7A bullet from a .357 Magnum has a mass of 11.66 gms and a muzzle velocity of 387 m/s. What is the de Broglie wavelength of the bullet? Select one: a. 2.34 x 10-35 m b. 1.47 x 103 m c. 1.47 x 10-34 m d. 2.34 x 102 m
- The photoelectric effeet tells us that A. electrons have a wave nature. B. light has a particle nature. C. a photon can be converted into an electron. D. electrons are the conductors in metals.QUESTION 8 An electron in hydrogen absorbs a photon and jumps from orbit n = 2 to n = 4. Using the energy level diagram shown, what was the energy of the absorbed photon? a. 0 eV b. 0.85 eV c. 3.4 eV d. 10.2 eV e. 2.55 eVA green light wavelength = 530 nm shines on a metal. It is determined that the stopping potential is 1.5V. a. calculate the binding energy of the metal. b. calculate the max speed of an ejected electron. c. calculate the minimum frequency of light that would expel electrons from the metal.
- 4. In an electron microscope electrons are accelerated by a 1500-V potential drop to a velocity of approximately 1x108 m/s. a) Calculate the de Broglie wavelength of these electrons. b) What size objects should such a microscope be able to visualize? Explain your answer. c) If you desire a minimum uncertainty in the position of the electrons in your microscope of 1 Å, what is the maximum uncertainty that is acceptable in the momentum and velocity of the electrons?..If the intensity of a light source is increased while the frequency and the metal surface remain the same, which of the following will occur? a. Electrons will be emitted at an increased rate with more average energy per electron. b. Electrons will be emitted at the same rate with the same average energy per electron. c. Electrons will be emitted at the same rate but with less average energy per electron. d. Electrons will be emitted at the same rate but with more average energy per electron. e. Electrons will be emitted at an increased rate with the same average energy per electron.A photon of light has a frequency of 5.00 x 1014 Hz. If the frequency of the photon was doubled then which of these would happen to the energy of this photon? a. it would become one-fourth as much b. it would become half as much c. it would double d. it would quadruple e. it would triple
- B79. Considering the photoelectric effect; a) If a material has a cutoff wavelength of 780 nm what is the work function of the material? b) What is the maximum speed of liberated electrons when light with a wavelength of 410 nm is used to illuminate the material? c) If a liberated electron has 3.2349 eV of kinetic energy and it was a photon emitted from a hydrogen atom transition that liberated it, what energy level transition occurred? State both the initial and final energy level.An electron jumps from the n = 4 to the n = 1 level in the hydrogen atom. In a second atom and electron jumps from n = 4 to n = 3. a. Which transition produces a photon with the larger energy? b. Which transition produces the shorter wavelength photon?