What is the de Broglie wavelength of a nitrogen molecule in air at 300K? Assume that the molecule is moving with the root-meansquarespeed of molecules at this temperature. (Atomic mass of nitrogen = 14.0076 u)
Show that the wavelength of electromagnetic radiation is equal to the de Broglie wavelength of its quantum (photon).
For what kinetic energy of a neutron will the associated de Broglie wavelength be 1.40 × 10– 10m? b) Also find the de Broglie wavelength of a neutron, in thermalequilibrium with matter, having an average kinetic energy of(3/2) k T at 300 Read More …
An electron and a photon each have a wavelength of 1.00 nm. Find a) Their momenta, b) the energy of the photon, and c) the kinetic energy of electron.
What is the de Broglie wavelength of a) a bullet of mass 0.040 kg travelling at the speed of 1.0 km/s, b) a ball of mass 0.060 kg moving at a speed of 1.0 m/s, and c) a dust particle Read More …
The wavelength of light from the spectral emission line of sodium is 589 nm. Find the kinetic energy at which a) an electron, and b) a neutron, would have the same de Broglie wavelength.
What is the a) momentum, b) speed, and c) de Broglie wavelength of an electron with kinetic energy of 120 eV.
Calculate the a) momentum, and b) de Broglie wavelength of the electrons accelerated through a potential difference of 56 V.
Light of wavelength 488 nm is produced by an argon laser which is used in the photoelectric effect. When light from this spectral line is incident on the emitter, the stopping (cut-off) potential of photoelectrons is 0.38 V. Find the work function Read More …
Light of frequency 7.21 × 1014 Hz is incident on a metal surface. Electrons with a maximum speed of 6.0 × 105 m/s are ejected from the surface. What is the threshold frequency for photoemission of electrons?
The work function for a certain metal is 4.2 eV. Will this metal give photoelectric emission for incident radiation of wavelength 330nm?