Q.1: The e/m value of electron is (CET-1999)
Q: What is the lowest energy level, in electronvolts (eV), of an electron in a one-dimensional atom…
A: The energy level of a one dimensional box is the lowest energy is for n=1.
Q: n electron accelerated by a potential difference of 100 V. What is its wavelength
A: given that potential difference = 100 volt according to de Broglie wave length for electron we…
Q: An electron microscope is designed to resolve objects as small as 0.14 nm. What energy electrons…
A: Eelectron=Ephoton=hcλ=1240 eV·nm0.14 nm=8857 eV
Q: If the activation voltage for an electron is Va resulting wavelength X? 0.01 0.1 10 100 = -1.24 x…
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Q: Why we find out the ‘e/m’ ratio of electron then separately measure ‘e’ and ‘m’?
A: We find out 'e/m' ratio of electron then we separately measure 'e' and 'm' because , it is easy to…
Q: The work function for metallic Ni is 5 eV. a) Calculate the threshold frequency of this material.…
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Q: What is the maximum energy in electron volts of the photos?
A: Here the energy =charge of electrons × voltage it passes through ANS: so the maximum energy will be…
Q: The wavelength of the yellow spectral emission line of sodium is 590 nm. At what kinetic energy…
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Q: A box contains 10 indentical atoms with he following velocities. Find its Vrms
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Q: Calculate the velocity (in m/s) of an electron that has a wavelength of 8.76 µm. m/s (b) Through…
A: given, the wavelength of electron=λ=8.76 um mass of electron=m=9.1x10-31kg According to de Broglie…
Q: Suppose an electron and proton have the same kinetic energy. How do their deBroglie wavelengths…
A: Given data The kinetic energy of both proton and electron is same. The expression for the…
Q: What is the maximum wavelength for which electrons are released, in nanometers and the frequency of…
A: Photoelectric effect is the phenomenon that occurs when a photon hits an metallic ion, and an…
Q: What is the ratio of deBroglie wavelengths of a 100 MeV kinetic energy proton to a 100 MeV kinetic…
A: Correct Option - (A) 0.02 Given- Kinetic energy of proton (Ep ) = 100 MeV Kinetic energy of electron…
Q: An electron volt is by definition the kinetic energy gained by an electron if it is accelerated…
A: Note :- Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the…
Q: Find the minimum wavelength for x-ray with a) 35 kV and b) 45kV voltages.
A: X-ray.
Q: Modern physics Explain the Franck Hertz Experiment. Which property of atoms has been proven in this…
A: The answer is given below
Q: electric threshold for certain metal is 3500nm . Determine the maximum energy of the ejected photo…
A: Given data: Threshold wavelength =3500 nm Incident wavelength =2000nm
Q: 8. Now, as we decrease the brightness of the light, record the # electrons and detection time, and…
A: Here, the given data is the value of the electron detected and the detection time at different…
Q: At what velocity will an electron have a wavelength of 1.00 m?
A: Given that-Wavelength, λ= 1 mMass of electron, me= 9.11×10-31 kgWe know that-De-broglie wavelength,…
Q: When cathode of a photocell is struck by light quanta each of energy 2.3 x 10-19 J, current flows in…
A: Given data: energy of light (E) = 2.3×10-19 J Stopping potential (Vo) = 0.15 V e = 1.60×10-19 C
Q: What is the minimum potential difference between the filament and the target of an x-ray tube if the…
A: Given, Tube is to produce x-ray of wavelength λ=0.250 nm. Planck's constant. h=6.6×10-34 Js.…
Q: What is the lowest energy level, in electronvolts (eV), of an electron in a one-dimensional atom…
A: **As per our company guidelines we are supposed to solve only one question (if there are multiple…
Q: An X-ray beam is scattered with free electrons. X-rays scattered at 45º in the beam direction have a…
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Q: Q2:- Find the de Broglie wavelength of (a) a 8-MeV proton; (b) a 55-GeV electron; (c) ar electron…
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Q: QIA: for unpaired free electron in Electron paramagnetic resonance (EPR) spectroscopy if Landé…
A: Electron Paramagnetic Resonance (EPR) or Electron Spin Resonance (ESR) is a type of magnetic…
Q: To resolve an object in an electron microscope, the wavelength of the electrons must be close to the…
A: Given: The diameter of the molecule is 7.8 nm. The mass of the electron is 9.1x10-31 kg.
Q: Before a piece of X- ray wavelength 0.71 A)) scattered by a piece of carbon at a right angle, then…
A: Given:wavelength before scattering, λ = 0.71 A = 0.71×10−10 mangle of scattering of photon is, φ =…
Q: Ex. 21 : The velocity of electron in the 1 Bohr having radius 0.53 A is 2200 km/s. orbit Calculate…
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Q: What is the maximum kinetic energy in eV of electrons ejected from a certain metal by 498 nm EM…
A: Wavelength is given Binding energy
Q: Suppose an electron in a TEM has a wavelength of 95 nm. What is the kinetic energy Of this electron…
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Q: What is the length of a box in which the difference between an electron’s first and second allowed…
A: The expression for the difference in the energy is as follows: En+1-En=h28mL2n+12-n2 1
Q: a) Describe the interaction process when a 95 keV x-ray photon interacts with a K-shell electron of…
A: There are many x-ray interactions with electron depending on the binding energy of the electron. Few…
Q: 4
A: In quantum mechanics, Heisenberg's uncertainty principle determines the accuracy limits of…
Q: Potassium and gold cathodes are used in a photoelectriceffect experiment. For each cathode, find:a.…
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Q: The threshold wavelength for wolfram photoemission is approximately 230 nm. What wavelength of light…
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Q: From Bohr's atomic model, write an equation giving the wavelength emitted when an electron passes…
A: To write an equation giving the wavelength emitted when an electron passes from a ni level to an nf…
Q: What is the accelerating voltage of an x-ray tube that produces x rays with a shortest wavelength of…
A: The energy of the X-ray photon is given by,
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