Concept explainers
(a)
The minimum potential difference through which the electrons needed to be accelerated to produce x-ray.
(b)
How the required potential to produce x-ray depends on the wavelength of the ray.
(c)
To explain whether the result in the previous sections predicts the correct minimum wavelength in Figure 41.22.
(d)
Whether the relation found in section (a) is equally applicable to other kinds of
(e)
The potential difference when the wavelength goes to zero.
(f)
The potential difference as the wavelength increases without limit.
Trending nowThis is a popular solution!
Chapter 41 Solutions
Bundle: Physics For Scientists And Engineers With Modern Physics, 10th + Webassign Printed Access Card For Serway/jewett's Physics For Scientists And Engineers, 10th, Multi-term
- The work function for potassium is 2.26 eV. What is the cutoff frequency when this metal is used as photoelectrode? What is the stopping potential when for the emitted electrons when this photo electrode is exposed to radiation of frequency 1200 THz?arrow_forwardIn x-ray production, electrons are accelerated through a high voltage AV and then decelerated by striking a target. Show that the shortest wavelength of an x-ray that can be produced is 1240 nm · V A min = Δνarrow_forwardIn an experiment similar to that of Franck and Hertz, deuterium (a proton and a neutron in the nucleus) is bombarded with a beam of electrons and excitation potentials of 10.2V and 12.1V are obtained. a) Explain the observation of three different spectral lines of emission that accompany these excitations. Suggestion: Draw an energy level diagram. b) Determine the wavelengths of the observed spectral lines.arrow_forward
- (a) A proton has a slightly smaller mass than a neutron. Compared to the neutron described in Example 39.2, would a proton of the same wavelength have (i) more kinetic energy; (ii) less kinetic energy; or (iii) the same kinetic energy? (b) Example 39.1 shows that to give electrons a wavelength of 1.7 * 10^-10 m, they must be accelerated from rest through a voltage of 54 V and so acquire a kinetic energy of 54 eV. Does a photon of this same energy also have a wavelength of 1.7 * 10^-10 m ?arrow_forwardIn the figure, thex rays shown are produced when 35.0 keV electrons strike a molybdenum target. If the accelerating potential is maintained at this value but a different target is used instead, what values of (a) Amin (b) the wavelength of the K, line and (c) the wavelength of the Kg line result? The K, L, and M x-ray levels for the new target are 22.74, 4.68, and 0.82 keV. Kg Continuous spectrum Ks Amin 30 40 50 60 70 80 90 Wavelength (pm) (a) Number i Units (b) Number i Units (c) Number i Units Relative intensityarrow_forwardIn the typical X-ray lamp the electrons are accelerated in the potential difference of 10,100 V before hitting the water cooled electrode. Find the shortest wavelength of X-rays produced in this lamp. State your answer in 1010 m and round it to the nearest thousandth. For example, if you get 1.2453 × 10-10 m, you type in 1.245. Take h=6.626x10-34 J s; 1e =1.6x10-19C; c=3x10®m/s.arrow_forward
- In x-ray production, electrons are accelerated through a high voltage and then decelerated by striking a target. (a) To make possible the production of x-rays of wavelength λ, what is the minimum potential difference ΔV through which the electrons must be accelerated? (b) State in words how the required potential difference depends on the wavelength. (c) Explain whether your result predicts the correct minimum wavelength as shown. (d) Does the relationship from part (a) apply to other kinds of electromagnetic radiation besides x-rays? (e) What does the potential difference approach as λ goes to zero? (f) What does the potential difference approach as λ increases without limit?arrow_forwardIn x-ray production, electrons are accelerated through a high voltage and then decelerated by striking a target. (a) To make possible the production of x-rays of wavelength A, what is the minimum potential difference AV through which the electrons must be accelerated? (b) State in words how the required potential difference depends on the wavelength. (c) Explain whether your result predicts the correct minimum wavelength in Figure. (d) Does the relationship from part (a) apply to other kinds of electromagnetic radiation besides x-rays? (e) What does the potential difference approach as A goes to zero? (f) What does the potential difference approach as A increases without limit? 30 40 50 60 70 80 90 A (pm) The continuous cune represnts bwtrlng The shortest wavelength depends on the accelerating voltagearrow_forwardIt is possible that a muon be captured by a proton to form a muonic atom. A muon is identic to an electron, except when your mass, which is m = 105.7 MeV/c^2. What ia the smallest wave length for a Lyman series for this atom? Give your answer in pm.arrow_forward
- A PET scan detects the product of positron electron annihilation. A positron and an electron annihilate and create 2 photons. (a) The wavelength of the photons will not be the same as the deBroglie wavelength of the positron and electron. Explain why. (b) The positron and electron each have a kinetic energy of 60 keV. What is the wavelength of each photon?arrow_forwardNeed help correcting the question screenshotted.arrow_forwardChapter 38, Problem 019 (a) If the work function for a certain metal is 1.9 ev, what is the stopping potential for electrons ejected from the metal when light of wavelength 504 nm shines on the metal? (b) What is the maximum speed of the ejected electrons? (a) Number Units (b) Number Unitsarrow_forward
- Physics for Scientists and Engineers with Modern ...PhysicsISBN:9781337553292Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningUniversity Physics Volume 3PhysicsISBN:9781938168185Author:William Moebs, Jeff SannyPublisher:OpenStaxPrinciples of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning