Fundamentals of Physics Extended
10th Edition
ISBN: 9781118230725
Author: David Halliday, Robert Resnick, Jearl Walker
Publisher: Wiley, John & Sons, Incorporated
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Chapter 40, Problem 77P
To determine
The Planck’s constant from the given experiment.
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1.4 A radiation with a frequency of 3.13 x10¹5 Hz releases an electron from a copper plate. The
kinetic energy of the electron is 2.00 x10-¹7 J. NB: Planck's constant, h = 6.63 x 10-34 Js.
(1)
(ii)
Calculate the work function of the plate.
Calculate the energy of a photon with a frequency of 5.4 x 10¹4 Hz.
1.5 The intensity of x-ray beam passing through a material decreases exponentially.
1)
Electrons with de-Broglie wavelength λ fall on the target in
an X-ray tube. The cut-off wavelength of the emitted
X-rays is
(a) λ =
(c) λo
2mcλ²
h
2m²c²x³
h²
2
3
2h
(b) λο
(d) λ = λ
20
mc
An electron is ejected from a metal with a velocity of 6.70 x 10^5m/s. If the metal has a threshold frequency of 1.50 x 10^15 Hz, what was the wavelength of the incident photon?
Chapter 40 Solutions
Fundamentals of Physics Extended
Ch. 40 - Prob. 1QCh. 40 - Prob. 2QCh. 40 - Prob. 3QCh. 40 - Prob. 4QCh. 40 - Prob. 5QCh. 40 - Prob. 6QCh. 40 - Prob. 7QCh. 40 - Figure 40-22 shows three points at which a spin-up...Ch. 40 - Prob. 9QCh. 40 - Prob. 10Q
Ch. 40 - Prob. 11QCh. 40 - Prob. 12QCh. 40 - Prob. 13QCh. 40 - Prob. 14QCh. 40 - Prob. 1PCh. 40 - Prob. 2PCh. 40 - Prob. 3PCh. 40 - Prob. 4PCh. 40 - Prob. 5PCh. 40 - Prob. 6PCh. 40 - Prob. 7PCh. 40 - Prob. 8PCh. 40 - Prob. 9PCh. 40 - Prob. 10PCh. 40 - Prob. 11PCh. 40 - Prob. 12PCh. 40 - SSM What is the acceleration of a silver atom as...Ch. 40 - Prob. 14PCh. 40 - Prob. 15PCh. 40 - Assume that in the SternGerlach experiment as...Ch. 40 - Prob. 17PCh. 40 - Prob. 18PCh. 40 - Prob. 19PCh. 40 - Prob. 20PCh. 40 - Prob. 21PCh. 40 - Prob. 22PCh. 40 - Prob. 23PCh. 40 - Prob. 24PCh. 40 - Prob. 25PCh. 40 - Prob. 26PCh. 40 - Prob. 27PCh. 40 - Show that the number of states with the same...Ch. 40 - Prob. 29PCh. 40 - For a helium atom in its ground state, what are...Ch. 40 - Prob. 31PCh. 40 - Prob. 32PCh. 40 - Prob. 33PCh. 40 - Prob. 34PCh. 40 - Prob. 35PCh. 40 - Prob. 36PCh. 40 - Prob. 37PCh. 40 - Prob. 38PCh. 40 - Prob. 39PCh. 40 - Prob. 40PCh. 40 - Prob. 41PCh. 40 - Prob. 42PCh. 40 - Prob. 43PCh. 40 - Prob. 44PCh. 40 - Prob. 45PCh. 40 - Prob. 46PCh. 40 - Prob. 47PCh. 40 - Prob. 48PCh. 40 - Prob. 49PCh. 40 - Prob. 50PCh. 40 - Prob. 51PCh. 40 - Prob. 52PCh. 40 - Prob. 53PCh. 40 - Prob. 54PCh. 40 - Prob. 55PCh. 40 - Prob. 56PCh. 40 - Prob. 57PCh. 40 - Prob. 58PCh. 40 - Prob. 59PCh. 40 - Prob. 60PCh. 40 - Prob. 61PCh. 40 - Prob. 62PCh. 40 - Prob. 63PCh. 40 - Prob. 64PCh. 40 - Prob. 65PCh. 40 - Prob. 66PCh. 40 - Prob. 67PCh. 40 - Prob. 68PCh. 40 - Prob. 69PCh. 40 - Prob. 70PCh. 40 - Prob. 71PCh. 40 - Prob. 72PCh. 40 - Prob. 73PCh. 40 - Prob. 74PCh. 40 - Prob. 75PCh. 40 - Prob. 76PCh. 40 - Prob. 77PCh. 40 - Prob. 78PCh. 40 - Prob. 79P
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- A metal with a work function of 4.2 eV is exposed to light in a photoelectric effect experiment. If the light has frequency 1,505 THz, what is the kinetic energy of ejected electrons, in eV? Planck's constant is 4.136 x 10-15 eV s.arrow_forwardSuppose that the uncertainty in position of an electron is equal to the radius of the n=1n=1 Bohr orbit, about 0.529×10−10m0.529×10−10m. A) Calculate the minimum uncertainty in the corresponding momentum component. Express your answer in kilogram meters per second. B) Compare this with the magnitude of the momentum of the electron in the n=1n=1 Bohr orbit. Compare this with the magnitude of the momentum of the electron in the Bohr orbit. a) This is greater than the magnitude of the momentum of the electron in the n=1n=1 Bohr orbit. b) This is the same as the magnitude of the momentum of the electron in the n=1n=1 Bohr orbit. c) This is less than the magnitude of the momentum of the electron in the n=1n=1 Bohr orbit.arrow_forwardWhen a metal is illuminated with light of wavelength 420 nm, the stopping potential is0.65 V; when the wavelength of incident light is changed to 310 nm, the stopping potential is 1.69V. Use these given data to find the work function of this metal in eV and a value of Planck’sconstant h (speed of light = 3 ×10 8 m/s, electronic charge = −1.6 ×10 -19 C).arrow_forward
- In a photoelectric experiment using a sodium surface, you find a stopping potential of 1.86 V for a wavelength of 300 nm and a stopping potential of 0.885 V for a wavelength of 393 nm. From these data find (a) a value for the Planck constant, (b) the work function for sodium, and (c) the cutoff wavelength Ao for sodium. (a) Number i (b) Number i (c) Number i Units Units Units >arrow_forwardLight of frequency 1.6 × 1015 Hz illuminates a piece of iron, and the iron emits photoelectrons with a maximum kinetic energy of 2.7 eV. What is the threshold frequency of the metal? Planck’s constant is 6.63 × 10−34 J · s. Answer in units of Hz.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_forward
- Photo-electric effect. when two ultraviolet beams of wavelengths 21= 80 on a lead surface, they produce photoelectrons with maximum energies 11.390 ev and 7.154 ev, respectivel and 22= 110 nm fall (a) Estimate the numerical value of the Planck constant. (b) Calculate the work function, the threshold frequency and the threshold wave-length of lead.arrow_forwardIf all the energy from a 119 W light bulb is emitted, on average, at 690.0 nm, how many 690.0 nm photons must be emitted each second to account for all 119 W? Planck’s constant is 6.6 x 10-34 J*s and the speed of light is 3.0 x 108 m/s.arrow_forwardLight of frequency 2.1 × 1015 Hz illuminates a piece of cesium, and the cesium emits photoelectrons with a maximum kinetic energy of 6.5 eV. What is the threshold frequency of the metal? Planck’s constant is 6.63 × 10−34 J · s. Answer in units of Hz.arrow_forward
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