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
10th Edition
ISBN: 9781337888516
Author: Raymond A. Serway, John W. Jewett
Publisher: Cengage Learning
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Chapter 41, Problem 24P
To determine
Why the given reaction is not possible.
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You illuminate a metal with light of wavelength 640 nm and find that the photoelectrons have a maximum kinetic energy of 0.70 eV. You then illuminate the same metal with light of another wavelength and find a maximum kinetic energy of 2.5 eV for the photoelectrons.
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A photoelectron is ejected from a metal via the photoclectric effect. A closer look reveals it is
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If the photoelectron was ejected from a metal by ultraviolet light with a wavelength of 75 nm,
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A strange metallic rock is found and is being tested. Suppose that light with a frequency of 9.40 ✕ 1014 Hz is incident upon the rock and a stopping potential of 1.50 V is needed to reduce the electron current to zero in a photoelectric experiment.What is the minimum frequency of light for which electrons are still ejected from the surface of this material? Hz
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
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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- If the work function of a metal is 3.2 eV, what is the maximum wavelength that a photon can have to eject a photoelectron from this metal surface?arrow_forwardA laser with a power output of 2.00 mW at a 400-nm wavelength is used to project a beam of light onto a calcium photoelectrode. (a) How many photoelectrons leave the calcium surface per second? (b) What power is carried away by ejected photoelectrons, given that the work function of calcium is 2.31 eV? (c) Calculate the photocurrent. (d) If the photoelectrode suddenly becomes electrically insulated and the setup of two electrodes in the circuit suddenly starts to act like a 2.00-pF capacitor, how long will current flow before the capacitor voltage stops it?arrow_forwardIn the interpretation of the photoelectric effect, how is it known that an electron does not absorb more than one photon?arrow_forward
- Estimate the binding energy of electrons in magnesium, given that the wavelength of 337 nm is the longest wavelength that a photon may have to eject a photoelectron from magnesium photoelectrode.arrow_forwardA 400-nm laser beam is projected onto a calcium electrode. The power of the laser beam is 2.00 mW and the work function of calcium is 2.31 eV. (a) How many photoelectrons per second are ejected? (b) What net power is carried away by photoelectrons?arrow_forwardb) Two light sources are used in a photoelectric experiment to determine the work function for a particular metal surface. When green light from a mercury lamp (2 = 546.1 nm) is used, a stopping potential of 0.376 V reduces the photocurrent to zero. Based on this measurement, %3D i. Calculate the work function for this metal. ii. If the yellow light from a helium discharge tube (2 = 587.5 nm) is used, find the %3D new stopping potential.arrow_forward
- 8 5.00-eV photons are incident on a metal, generating photoelectrons that have a maximum kinetic energy of 0.69 eV. Based on the reference table provided at the top of this exam, what is this metal? sodium (Na) O copper (Cu) aluminium (Al) O zinc (Zn) O iron (Fe)arrow_forwardWhat is the greatest wavelength of light that will cause the emission of photoelectrons from sodium. If 200nm light falls on the sodium surface, what will be the greatest kinetic energy of photoelectrons (2.3 ev for sodium).arrow_forwardWhen photons with an energy of 3.0 electron-volts strike a photoelectric surface the maximum kinetic energy of the emitted photoelectrons is 2.0 electron- volts. What is the work function of the ?surface 1.0 ev O 0.67 eV 1.5 ev O 5.0 ev Oarrow_forward
- The energy conservation principle that applies to the photoelectric experiment is Ephoton = (KE)electron + W, where W is the “work function” for the metal. (The work function is the minimum energy required to eject an electron from the metal surface.) The work function for calcium metal is 4.60 10−19 J. If calcium is irradiated with 400-nm photons, what is the de Broglie wavelength of the resulting photoelectron beam?arrow_forwardLithium has a work function of 2.30 eV. Light with a wavelength of 400 nm is incident on the metal (a) Determine if this metal exhibit the photoelectric effect. Explain your reasoning. (b) Find the maximum kinetic energy for the photoelectron released.arrow_forwardThe photoelectric equation for the kinetic energy of a photoelectron is, following Einstein, E < hf – W, whereh is Planck's constant, f is the frequency of the light, and W is the work-function. Sodium has W = 3.2×10-19 J. When sodium is illuminated by monochromatic light of a particular frequency, electrons are emitted with speeds up to 8 x 105 ms-1. a) Calculate the wavelength of the light. b) Calculate the stopping potential.arrow_forward
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