Ex. 7 What is de Broglie wavelength of an electron accelerated through 25000 volt?
Q: What is the de Broglie wavelenght of: i. a proton (mass of proton=1.67x10^-27 kg) traveling at 15…
A: de Broglie wavelength is given by, λ=hmv Here, h is the Planck's constant, m is the mass of the…
Q: c) How about the 2rd excited state (3) to the ground state (1)? Wh wavelength and what color? d)…
A: (c) The energy level 3rd (second excited state) to ground state (1) is E=3.98×10-19 J The…
Q: The energy density of a black body is maximum at Amax = 1085 nm. Calculate t cemperature of the…
A: The wavelength at which energy density is maximum, We need to find the…
Q: A photon of wavelength 0.48320 nm strikes a free electron that is initially at rest. The photon is…
A: This problem can be solved using the conservation of linear momentum for the scattering of photon…
Q: In an experiment tungsten cathode which has a threshold wavelength 2300Å is irradiated by…
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Q: Draw a graph showing the variation of de Broglie wavelength λ of a particle of charge q and mass m,…
A: We know that wavelength is also calculated as λ=hmvv=hmλsquaring both sides and multiply both the…
Q: An LED is very efficient because within the LED itself, the electrical energy is directly converted…
A: Given that, An electronic circuit containing a LED. Whereas the voltage of the battery is Vo=3V The…
Q: An electron has an uncertainty in its position of 607 pm. What is the uncertainty in its velocity?
A: Given data: Uncertainty in position of electron is, ∆x=607 pm=607×10-12 m.
Q: he blackbody radiation emitted from a furnace peaks at a wavelength of 2.5 10-6 m (0.0000025 m).…
A: Use Wein displacement law
Q: An electron is trapped in a one-dimensional box that is 501 nm wide. Initially, it is in the n = 3…
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Q: An electron initially moves in first excited state, if it absorb energy with frequency 5x10 Hz. Find…
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Q: he minimum wavelength of electromagnetic radiation that is capable of removing electrons from the…
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Q: find the momentum p of the electrons.
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Q: Consider a photon with wavelength 0.011 nm. l = 0.011 nm What is the momentum of the photon in…
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Q: If a photon has energy of 4.3 eV, calculate its' wavelength. Report your answer in nm . Your Answer:…
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Q: An electron is confined to a rigid box that is 1.20nm long. If the electron is in the third excited…
A: The wavelength for the third state (n=4) can be calculated as,
Q: An electron has a total energy of 5 MeV. a. Find its momentum in units of MeV/c. and what is the…
A: GIVEN : Energy E = 5 MeV We know rest energy of electron E∘=0.511 MeV Momentum can be found by using…
Q: 9.2 A photoelectron is produced from a bismuth surface (which has a work function of 4.31 eV) at a…
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Q: A) Calculate the de Broglie wavelength of a neutron (mn = 1.67493×10-27 kg) moving at one six…
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Q: Problem 1: Blackbody radiation It's not obvious how the Planck spectrum changes as a function of…
A: Planck’s law for of black-body radiation states that, Where h denotes the Planck’s constant. c…
Q: Barium has a work function of 2.48 eV. 1. a) What is the maximum kinetic energy of electrons if the…
A: (a) (given) Work function ϕ Barium = 2.48 eV Wavelength λ of UV light = 365 nm…
Q: What is the wavelength (in m) of a 2.06 eV photon? Find its frequency in hertz.
A: Given that, Energy of photon, E = 2.06 eV We know that Planck constant, h = 6.626 × 10-34Js…
Q: A. Electrons are ejected from a metal surface with speeds ranging up to 4.72E+5m/s when light with…
A: Given: The speed of the electron is 4.72x105 m/s. The wavelength of the light is 650 nm.
Q: A beam of electrons is accelerated from rest through a potential difference of 0.100 kV and then…
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Q: A firefly glows by the direct conversion of chemical energy to light. The light emitted by a firefly…
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Q: Electrons with a speed of 2.0 x 106 m/s pass through a double-slit apparatus. Interference fringes…
A: (a) The wave length associated with the motion of electron is given by, λe=hmeν Now as we know that…
Q: Which of the following statements are true? Choose all that apply. A photon has kinetic energy.
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Q: The threshold wavelength for the photoelectric effect for silver is 262 nm. What is the work…
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Q: Determine the de Broglie wavelength for i. an electron (mass = 9.1 x 10-31 kg) moving at a speed of…
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- Electrons with a speed of 1.4×106 m/sm/s pass through a double-slit apparatus. Interference fringes are detected with a fringe spacing of 2.4 mmmm . Part A What will the fringe spacing be if the electrons are replaced by neutrons with the same speed? Express your answer in micrometers. ΔynΔyn = 1.30•10−6 μmμm SubmitPrevious AnswersRequest Answer Incorrect; Try Again; 4 attempts remaining Part B What speed must neutrons have to produce interference fringes with a fringe spacing of 2.4 mmmm ? Express your answer in meters per second.If a photon of wavelength 0.0665 nm hits a free electron and is scattered at an angle of 35◦ from its original direction, findat. the change in wavelength of this photon,b. the wavelength of the scattered photon,vs. the change in energy of the photon (is it a loss or a gain?), and d. the energy gained by the electron.The wavelength of a red spectral emission line is 670.0 nm. At what kinetic energy (in J) would an electron have that wavelength as its de Broglie wavelength?