A tungsten target is struck by electrons that have been accelerated from rest through a 40.0 - kV potential difference. Find the shortest wavelength of the radiation emitted.

Q: In a photoelectric-effect experiment, the maximum kinetic energy of electrons is 2.8 eV. When the…

A: (a) Using Photoelectric equation, KEmax=hcλ-ϕ0 When the wavelength is increased by 50%,…

Q: Through what angle must a 200 keV photon be scattered by a free electron so that the photon loses…

A:

Q: Red light of wavelength 670 nm produces photoelectrons from a certain metal which requires a…

A:

Q: When UV light of wavelength 255 nm falls on a metalsurface, the maximum kinetic energy of emitted…

A: incident wavelength = 255 nm  Kinetic energy = 1.4 eV

Q: If the stopping potential of a metal when illuminated with a radiation of wavelength 480 nm is 1.2…

A:

Q: What is the longest-wavelength EM radiation that can eject a photoelectron from silver, given that…

A: The binding energy,

Q: A proton is confined to a nucleus whose diameter is 5.5 × 10^−15 ?. If this distance is considered…

A:

Q: Light of wavelength 191 nm is shone on copper, which has a work function (or binding energy) of 4.94…

A: The maximum kinetic energy of the electrons can be given by Kmax=hf-ϕ Also, Kmax=12mvmax2

Q: An electron accelerates from the  rest through  a potential difference of 2.00 kV.  What is itsde…

A:

Q: Calculate the minimum - wavelength x - ray that can be produced when a target is struck by an…

A: Write the expression for minimum wavelength of the X ray .

Q: Suppose the minimum uncertainty in the position of a particle is equal to its de Broglie wavelength.…

A: Given: The average speed is 4.5x105 m/s.

Q: What are the maximum electron speed and the stopping potential if sodium is illuminated with light…

A: The maximum speed that the photoelectron can have, can be obtained from the photoelectric equation…

Q: Consider a photon with wavelength 0.011 nm. l = 0.011 nm What is the momentum of the photon in…

A:

Q: The diameter of the nucleus is about 12.1fm. What is the kinetic energy of a proton with a de…

A: diameter of nucleus (d) = 12.1 fm de broglie wavelength of proton = 12.1 fm

Q: A nonrelativistic particle is moving three times as fast as an electron. The ratio of the de Broglie…

A:

Q: Electrons in an x-ray tube accelerate through a potential difference of 10.0 kV before striking a…

A: The potential difference applied is V = 10 kV = 10 x 103 V

Q: What minimum accelerating voltage would be required to produce an x-ray with a wavelength of 0.0280…

A: wavelength = 0.0280 nm = 0.28 Angstrom

Q: What speed would an electron need in order to match the de Broglie wavelength of a proton whose…

A: The wavelength is inversely proportional to mass and speed. The unit of wavelength is meter(m).…

Q: If the cutoff frequency of the lead metal is 9000 THz and the emitted photoelectrons have kinetic…

A: cutoff frequency (f) of lead metal= 9000 THz

Q: What is the maximum kinetic energy of electrons knocked out of a thin copper foil by Compton…

A:

Q: If the kinetic energy of the particle is increased to 16 times its previous value, the percentage…

A:

Q: Through what minimum potential difference must an electron in an x-ray tube be accelerated so that…

A:

Q: A 1.00 mW helium-neon laser emits a visible laser beam with a wavelength of 633 nm. How many photons…

A:

Q: The work function for tungsten (W) is 4.52 eV. What is the maximum Kinetic Energy of emitted…

A: Given :The work function for tungsten (W) is 4.52 eV.wavelength λ = 200 nm

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: Light of frequency 9.95 x 1014 Hz ejects electrons from the surface of silver. If the maximum…

A: Frequency of incident light: ν = 9.95 x 1014 Hz Kinetic energy of ejected electrons: KE = 0.180 x…

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: Radiation of wavelength A = 290 nm falls on a metal surface for which the work function is W = 4.05…

A: Given Data : The work function is given as W = 4.05 eV. The wavelength is given as λ=290 nm×10-9 m1…

Q: An electron accelerates from rest through a potential difference of 2.00 kV. What is its de Broglie…

A:

Q: A helium–neon laser emits laser light at a wavelength of 632.8 nm and a power of 2.3 mW. At what…

A:

Q: Calculate the velocities of electrons with de Broglie wavelengths of 1.7×103 nm and 5.0 nm,…

A:

Q: Find the(a) maximum frequency, and(b) minimum wavelength of X-rays produced by 30 kV electrons.

A: Given: Find the(a) maximum frequency E=hv    We know, E=eV Now,

Q: When light of wavelength 350 nm falls on a potassium surface, electrons having a maximum kinetic…

A:

Q: Lithium has a work function of 2.51 eV. What is the maximum kinetic energy of the photoelectrons if…

A:

Q: The work function of caesium metal is 2.14 eV. When light of frequency 6 x 1014 Hz is incident on…

A: Given value--- work function = 2.14 eV. incident frequency = 6 × 1014 Hz. We have to find---…

Q: What is the kinetic energy of an electron in a TEM having a 0.0100-nm wavelength?

A:

Q: A photon of wavelength 200 nm strikes a metal and ejects an electron with a velocity of 3.4x10^5…

A: The emission of electrons from the surface of a metal when photons hit its surface, is known as the…

Blackbody

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