Physics for Scientists and Engineers with Modern Physics
10th Edition
ISBN: 9781337553292
Author: Raymond A. Serway, John W. Jewett
Publisher: Cengage Learning
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Chapter 41.8, Problem 41.5QQ
To determine
The change in the wavelength of the characteristic x-rays when the energy of the electrons striking the target is increased.
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X rays are produced in an x-ray tube by electrons accelerated through an electric potential difference of 50.0 kV. Let K0 be the kinetic energy of an electron at the end of the acceleration. The electron collides with a target nucleus (assume the nucleus remains stationary) and then has kinetic energy K1 = 0.500K0. (a) What wavelength is associated with the photon that is emitted? The electron collides with another target nucleus (assume it, too, remains stationary) and then has kinetic energy K2 = 0.500K1. (b) What wavelength is associated with the photon that is emitted?
In an x-ray tube, as you increase the energy of the electrons striking the metal target, do the wavelengths of the characteristic x-rays(a) increase, (b) decrease, or (c) remain constant?
In an x-ray tube, if the energy with which the electrons strike the metal target is increased, the wavelengths of the characteristic x-rays do not change. Why not?
Chapter 41 Solutions
Physics for Scientists and Engineers with Modern Physics
Ch. 41.3 - Prob. 41.1QQCh. 41.3 - Prob. 41.2QQCh. 41.4 - Prob. 41.3QQCh. 41.4 - Prob. 41.4QQCh. 41.8 - Prob. 41.5QQCh. 41 - Prob. 1PCh. 41 - Prob. 2PCh. 41 - Prob. 3PCh. 41 - Prob. 4PCh. 41 - Prob. 5P
Ch. 41 - Prob. 6PCh. 41 - Prob. 7PCh. 41 - Prob. 8PCh. 41 - Prob. 9PCh. 41 - Prob. 10PCh. 41 - Prob. 11PCh. 41 - Prob. 13PCh. 41 - Prob. 14PCh. 41 - Prob. 15PCh. 41 - Prob. 16PCh. 41 - Prob. 17PCh. 41 - Prob. 18PCh. 41 - Prob. 19PCh. 41 - Prob. 20PCh. 41 - Prob. 21PCh. 41 - Prob. 23PCh. 41 - Prob. 24PCh. 41 - Prob. 25PCh. 41 - Prob. 26PCh. 41 - Prob. 27PCh. 41 - Prob. 28PCh. 41 - Prob. 29PCh. 41 - Prob. 30PCh. 41 - Prob. 31PCh. 41 - Prob. 32PCh. 41 - Prob. 33PCh. 41 - Prob. 34PCh. 41 - Prob. 35PCh. 41 - Prob. 36PCh. 41 - Prob. 37APCh. 41 - Prob. 39APCh. 41 - Prob. 40APCh. 41 - Prob. 41APCh. 41 - Prob. 42APCh. 41 - Prob. 44APCh. 41 - Prob. 45APCh. 41 - Prob. 46APCh. 41 - Prob. 47APCh. 41 - Prob. 49APCh. 41 - Prob. 50APCh. 41 - Prob. 51CPCh. 41 - Prob. 52CP
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- At what velocity will an electron have a wavelength of 1.00 m?arrow_forwardCalculate the minimum-wavelength x-ray that can be produced when a target is struck by an electron that has been accelerated through a potential difference of 26.0 kV and 1.10 ✕ 102 kV. (a) 26.0 kV ?min =answer in m (b) 1.10 ✕ 102 kV ?min =answer in m (c) What happens to the minimum wavelength as the potential difference increases? -remains the same -increases -decreasesarrow_forwardX rays with a wavelength of 0.0700 nm diffract from a crystal. Two adjacent angles of x-ray diffraction are 45.6° and 21.0°. What is the distance in nm between the atomic planes responsible for the diffraction?arrow_forward
- Electrons are accelerated from rest in a vacuum tube by an accelerating voltage. They strike a target and release x-rays as a result of the collision. If the highest-energy x-ray photons emitted by the target have a wavelength of 8.00 ✕ 10−11 m, what accelerating voltage (in V) is required? answer in Varrow_forwardCalculate the minimum-wavelength x-ray that can be produced when a target is struck by an electron that has been accelerated through a potential difference of 21.0 kV and 1.10 ✕ 102 kV. (a) 21.0 kV ?min = m (b) 1.10 ✕ 102 kV ?min = m (c) What happens to the minimum wavelength as the potential difference increases? increasesdecreases remains the samearrow_forwardIn an X-ray tube, electrons, bombarding the anode produce X-rays of wavelength 1A . The energy of an electron, when it hits the anode is (a) 19.8 × 10-16 ] (b) 16.3 × 10-16 J (c) 13.7 × 10-16 J (d) 9.8 × 10- 16 Jarrow_forward
- Electrons in an x-ray tube accelerate through a potential difference of 10.0 kV before striking a target. If an electron produces one photon on impact with the target, what is the minimum wavelength of the resulting x rays? Find the answer by expressing energies in both SI units and electron volts.arrow_forwardWhen ultraviolet light with a wavelength of 400.0 nm falls on a certain metal surface, the maximum kinetic energy of the emitted electrons is measured to be 1.10eV. What is the maximum kinetic energy of the electrons in joules when light of wavelength 300.0 nm falls on the surface?arrow_forwardIn an electron-diffraction experiment using an accelerating voltage of 54 V, an intensity maximum occurs for u = 50° (see Fig. ). X-ray diffraction indicates that the atomic spacing in the target is d = 2.18 * 10-10 m = 0.218 nm. The electrons have negligible kinetic energy before being accelerated. Find the electron wavelength.arrow_forward
- .An x-ray photon whose initial frequency was 1.5x 109 Hz emerges from a collision with an electron with a frequency of 1.2x 1019 Hz. How much kinetic energy was imparted to the electron?arrow_forwardQ5 X-rays of wavelength 1 = 84 pm are scattered from a carbon target, and the scattered rays are detected at 158° to the incident beam. Evaluate: (i) The Compton shift of the scattered rays. (ii) The percentage of the initial x-ray photon energy that is transferred to an electron in the scattering. Take, Planck Constant h = 6.63 x 10-34 J. S Speed of light c = 3.00 x 10°m/s Mass of electron = 9.11 × 10-31kgarrow_forward(a) A hydrogen atom has its electron in the n = 6 level. The radius of the electron's orbit in the Bohr model is 1.905 nm. Find the de Broglie wavelength of the electron under these circumstances.___________ m(b) What is the momentum, mv, of the electron in its orbit? ________kg-m/sarrow_forward
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