Molybdenum has a work function of 4.20 eV. What is the stopping potential if the incident light has a wavelength of 180 nm?

Q: slits.What is the de Brogli

A: Given as, Travel= 0.400 m/s, Separation= 1.00 mm, Place= 10.0 m.

Q: A beam of 920 eV alpha particles (m=6.64x10-27kg) scatters from the atoms that have spacing 0.0987…

A: Given, Mass of the alpha particles, M=6.64×10-27kg Spacing,  d=0.0987nmd=0.0987×10-9m Energy,…

Q: Lithium is used in a photoelectric effect experiment. If its work function is 2.95 eV, what…

A: Work function of lithium (Wo) = 2.95 eV

Q: 3.2 Light with a wavelength of 2.00×10-7 m is directed at a metallic surface made of yttrium, which…

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Q: When 6.8x1014 Hz light shines on a plate of unknown material, it is determined that the stopping…

A: Frequency of the light = 6.8 × 1014 Hz Stopping potential = 1.6 V

Q: A metal has a work function of 1.55 eV. Light with a frequency of 8.25 x 1014 Hz is incident on the…

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Q: A beam of neutrons that all have the same energy scatters from atoms that have a spacing of 0.0910…

A: By using Bragg's law,             mλ=2dsinθ Here , d=0.0910 nm ,θ=28.6°& m=1.The maximum…

Q: What is the energy (in eV) of the following photons? A 450-nm photon of blue light?

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Q: Light that has a 199-nm wavelength strikes a metal surface, and photoelectrons are produced moving…

A: Einstein's Photoelectric equation                               hν =ϕ0 + 12mV2hcλ =ϕ0 + 12mV2 Where…

Q: A 633 nm helium-neon laser puts out 4.00 W of power with a beam 5.70 mm in diameter. The beam is…

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Q: What is the frequency (ν in hertz) of the photons emitted by a HeNe laser with a wavelength (λ) of…

A: Wavelength of the photons,  Speed of the photons,    From the basic equation of wave mechanics, we…

Q: Green HeNe lasers are available and they emit light at 543.5 nm. What is the A / B value at this…

A: Given: Wavelength of Green HeNe laser is 543.5nm, λ=543.5×10-9m To Find: Relation between einstein…

Q: What is the wavelength in nm of a photon that has a momentum of 4.5*10^-27 kg.m/s

A: Momentum of the photon,  Planck's constant,    The momentum of the photon is given by the expression…

Q: Two lasers have 1.0 of power. One emits light at 635 nm and the other at 500 nm. Which light emits…

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Q: When 250 nm light falls on a metal, the current through a photoelectric circuit (Figure 1) is…

A: Given data, Wavelength λ=250 nm=2500 A° Stopping potential V0=1.74 V

Q: A physicist makes many measurements of the frequency of light emitted when a electron transitions…

A: Answer Given  Uncertainty in frequency measurement  ∆f = 17.4×106 Hz So the uncertainty in energy…

Q: How many photons are emitted during a 2.50-second burst of light from a 445 nm laser that operates…

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Q: A single beam of electrons shines on a single slit of width 3.3nm. A diffraction pattern (of…

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Q: in Compton scattering A 1.20 nm wavelength X-ray is fired at the target and scattered at an angle of…

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Q: The wavelengths of visible light range from approximately 400400 to 750 nm750 nm. Part (a)  What is…

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Q: A metal surface is illuminated by light with a wavelength of 550 nmnm . The maximum kinetic energy…

A: We have  maximum kinetic energy of emmited photons is given by KEmax​=hυ−hυ0​=hυ−Φ0​work function of…

Q: Violet light of wavelength 400 nm ejects electrons with a maximum kinetic energy of 0.860 eV from…

A: The energy of radiation is, E=hcλE=4.41×10-153×108400×10-9E=3.11eV

Q: An x-ray source generates EM radiation with a wavelength of 45.0 pm (10-12 m). h =       c =…

A: Photon energy is given by : E =hcλ = 1.98644586×10-2545x10-12 = 4.413x10-15 J Potential difference:…

Q: Electrons are ejected from a metallic surface with speeds ranging up to 4.60 x 105 m/s when light…

A: The work function of a material is defined as the minimum amount of energy that is required by a…

Q: I. What is the de Broglie wavelength of the particle with mass 1 kg that is moving at a speed of…

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Q: An atom initially in an energy level with -2.59 eV emits a photon that has wavelength 480 nm. What…

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Q: What is the energy (in eV) of the following photons? A 200-nm photon of ultraviolet light?

A: Given data: For a ultraviolet light, Photon's wavelength, λ=200 nm=2×10-7 m          (∵1 nm=10-9 m)…