Advertisements
Advertisements
प्रश्न
Calculate the de Broglie wavelength of an electron moving with - of the speed of light in vacuum (Negelct relativistic effect)
(Planck's constant: h = 6.63 x 10-34 Js, Mass of electron : m = 9.11 x 10-28 g)
Advertisements
उत्तर
∴ The de Broglie wavelength of electron is 7.278 × 10−12 m
APPEARS IN
संबंधित प्रश्न
A proton and an α -particle are accelerated through the same potential difference. Which one of the two has greater de-Broglie wavelength Justify your answer.
A proton and an α-particle are accelerated through the same potential difference. Which one of the two has less kinetic energy? Justify your answer.
An α-particle and a proton are accelerated through the same potential difference. Find the ratio of their de Broglie wavelength.
State how de-Broglie wavelength (`lambda`) of moving particles varies with their linear momentum (p).
An electron is accelerated from rest through a potential V. Obtain the expression for the de-Broglie wavelength associated with it ?
A proton and an electron have same kinetic. Which one has greater de-Broglie wavelength and why?
Using de Broglie’s hypothesis, explain with the help of a suitable diagram, Bohr’s second postulate of quantization of energy levels in a hydrogen atom.
An electron of energy 150 eV has wavelength of 10-10m. The wavelength of a 0.60 keV electron is?
A proton and an electron are accelerated by the same potential difference. Let λe and λpdenote the de Broglie wavelengths of the electron and the proton, respectively.
What is meant by diffraction of light?
Find the de Broglie wavelength of electrons moving with a speed of 7 × 106 ms -1.
Describe in brief what is observed when moving electrons are allowed to fall on a thin graphite film and the emergent beam falls on a fluorescent screen.
If the kinetic energy of a free electron double, its de-Broglie wavelength changes by the factor ______.
Light of wavelength 2000 Å falls on a metal surface of work function 4.2 eV.
What is the kinetic energy (in eV) of the fastest electrons emitted from the surface?
Light of wavelength 2000 Å falls on a metal surface of work function 4.2 eV.
If the same light falls on another surface of work function 6.5 eV, what will be the energy of emitted electrons?
Gas exerts pressure on the walls of the container because :
Two bodies A and B having masses in the ratio of 3 : 1 possess the same kinetic energy. The ratio of linear momentum of B to A is:
A solid sphere is in a rolling motion. In rolling motion, a body possesses translational kinetic energy (kt) as well as rotational kinetic energy (kr) simultaneously. The ratio kt : kr for the sphere is:
Two bodies have their moments of inertia I and 2I respectively about their axis of rotation. If their kinetic energies of rotation are equal, their angular momenta will be in the ratio:
When the displacement of a particle executing simple harmonic motion is half of its amplitude, the ratio of its kinetic energy to potential energy is:
A running man has half the kinetic energy of that of a boy of half of his mass. The man speeds up by 1 m/s so as to have the same K.E. as that of the boy. The original speed of the man will be:
The de- Broglie wave length of an electron moving with a speed of 6.6 × 105 m/s is approximately
A strong argument for the particle mature of cathode ray is to
An oil drop carrying a charge q has a mass m kg it is falling freely in air with terminal speed v. the electron field required to make the drop move upward with the same speed is
A neutron beam of energy E scatters from atoms on a surface with a spacing d = 0.1 nm. The first maximum of intensity in the reflected beam occurs at θ = 30°. What is the kinetic energy E of the beam in eV?
What is meant by “Dual nature of matter”?
