What is the frequency (per second) and energy per quantum (in joules) of x-ray beams of wavelength 0.7 1 Å (Mo Ka) and 1.54 Å (Cu Ka)?

Q: When light of wavelength 250nm is incident on a metal surface, the maximum speed of the…

A: Given:  incident wavelength = 250 nm = 250 x 10-9 m  maximum speed, v = 4 x 105 m/s

Q: What is the wavelength of a proton traveling at a speed of 8.31 km/s?

A: The velocity of the proton,

Q: What is the energy of a neutron having wavelength 1000 nm ?

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Q: The wavelength of a yellow photon is 660 nm. At what kinetic energy would an electron have that…

A: The relation between the momentum and the de Broglie wavelength is  where, h is the Plank's…

Q: What is the de Broglie wavelength of a electron that is moving at 8.77 x 105 m/s? Please give your…

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Q: 12 10 | (100;10) |(150;6) (200; 3,8) (300; 19) 2- |(400; 0,5) Potencial de corte, Vcorte (V)

A: It is very easy.

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: What is the kinetic energy of a proton whose de Broglie wavelength is 15.4 fm?

A: p=hλ=6.63×10-34 J·s15.4 fm10-15 m1 fm=0.431×10-19 m

Q: What is the wavelength of an x-ray with frequency of 7.5 x 1017 Hz?

A: We Know thatλ=cfHeref=frequencyc=speed of lightλ=wavelength

Q: The de Broglie wavelength (in nanometer) for an electron moving with 5.739 x 10“ m/s is:

A: Given: The speed of the electron is 5.739x104 m/s.

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: What is the frequency of a 9 x 1025 joule photon?

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Q: Find the energy of the following. Express your answers in units of electron volts, noting that 1 eV…

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Q: What is the de Broglie wavelength of a proton whose kinetic energy is 2.0 MeV? 10.0 MeV?

A: Kinetic energy of proton1: KE1 = 2.0MeV = 2.0 x 1.6 x 10-13 V = 3.2 x 10-13 V Kinetic energy of…

Q: The maximum energy of photoelectrons from aluminum is 2.3 ev for radiation of wavelength 200nm and…

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Q: When ultraviolet light with a wavelength of 400 nm falls on a certain metal surface, the maximum…

A: Given : Wavelength of ultraviolet light λ = 400 nm             Kinetic Energy = 1.10 eV…

Q: What is the energy in joules of a photon in a radio wave from an AM station that has a 1530-kHz…

A: The energy of a Photon is directly proportional to its frequency where h  is a constant, known as…

Q: What are (a) the energy of a photon corresponding to wavelength 1.00 nm, (b) the kinetic energy of…

A: a) The expression for the energy of photon is,

Q: What is the wavelength of a radio photon from an ”AM” radio station that broadcasts at 1260…

A: Given,Frequency, f = 1260 kHzSpeed of light, c = 3x108 m/s

Q: The photoelectric threshold wavelength of a tungsten surface is 272nm. Calculate the maximum kinetic…

A: Given:frequency, f = 1.45×1015 Hzwavelength,λ0 = 272 nmSolution:We know that, the eqaution for work…

Q: A Light Bulb emits EMR with a frequency of 7.00×1014 Hz. If the TOTAL amount of Energy it produces…

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Q: What is the wavelength of a photon that has the same momentum as an electron with a speed of 2.69…

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Q: An electron has kinetic energy E = 295KeV which is equal to the energy of a photon. Let λ1 be the…

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Q: What should be the stopping potential for photoelectrons if the target material used is Platinum and…

A: The photoelectric effect states that Ek = hf − ϕ

Q: A Light Bulb emits EMR with a frequency of 7.00×1014 Hz. If the TOTAL amount of Energy it produces…

A: Given: frequency ν=7.00*1014 Hz total energy E=3.0 MJ=3*106 J

Q: What is the energy, in eV, of an x-ray photon with a wavelength of 7.00x10-2 nm?

A: (given)       Wavelength of x ray photon  = 7×10-2 nm…

Q: What is the  de Broglie wavelength for an electron  moving at 2.00 x 10^7 m/s?

A:

Q: Which of the following statement is correct? a. Threshold frequency does not depend o the metal used…

A: (a) For a frequency ν of incident radiation, lower than the cut-off frequency ν0, no photoelectric…

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,

Q: The de Broglie wavelength (in nanometer) for an electron moving with 2.479 x 104 m/s is:

A: According to de-Broglie, the wavelength of an electron is inversly proportional to its momentum.

Q: A metal surface is illuminated by light with a wavelength of 2,8. 107 m. If the stopping potential…

A: Wavelength of light  λ = 2.8×10-7 m Stopping potential Vo = 0.7 V Detachment energy W = ?

Q: The surface of a metal is illuminated alternately with photons of energies E1 = 4 eV and E2 = 2.5 eV…

A: Given Energy of photon (E1) = 4eV Energy of photon (E2) = 2.5eV

Q: (a) A γ -ray photon has a momentum of 8.00×10−21 kg ⋅ m/s . What is its wavelength? (b) Calculate…

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Q: Gold has a work function of 5.45 eV. What is the maximum kinetic energy of the photoelectrons if 9.7…

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Q: A typical x-ray has a frequency of 3x10*17 Hz. What is the wavelength?

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Q: When light of wavelength 250nm is incident on a metal surface,the maximum speed of the…

A: Given:  incident wavelength = 250 nm = 250 x 10-9 m max speed, v = 4 x 105 m/s  mass of electron, m…

Q: How many photons with a wavelength of 450 nm is required to have a mass of 1.25 micrograms?

A: Given: mass,m= 1.25 x 10-6 g =1.25 x 10-9 kg wavelength = 450 nm

Q: What (a) frequency, (b) photon energy, and (c) photon momentum magnitude (in keV/c) are associated…

A: a) To determine the frequency,

Q: How many photons per second are emitted by the antenna of a microwave oven, if its power output is…

A:

Q: A nickel crystal’s work function is measured to be 5.22 eV at 25°C. As the temperature increases by…

A: Given, Work function, ϕ=5.22 eV, dropped worked function, ϕ'=5.22 eV-0.050 eV=5.17 eV.

Q: How many photons per second are emitted by the antenna of a microwave oven, if its power output is…

A: This question is based on Electromagnetic waves topic. Relation between Power and Energy: Energy of…

Q: What is the de Broglie wavelength of an electron with a kinetic energy of 1.0 eV?

A: De Broglie wavelength  can be mathematically given by, λ=hcE where, λ is De Broglie wavelength. and…

Q: An electron and a photon each have a wavelength of 0.20 nm.What is the momentum (in kg m/s) of the…

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Q: A housing attached to a microprocessor uses radiator fins to get rid of excess heat. If the largest…

A: Given : Frequency , f = 186.2 THz  f = 186.2 × 1012 Hz  To Find : Wavelength , w = ?

Q: How fast must an electron move to have a kinetic energy equal to the photon energy of sodium light…

A: The expression for the kinetic energy of an electron moving with a velocity will be,

Blackbody

Q.5 A blackbody radiates how much energy when the temperature of the body is elevated?