Advertisements
Advertisements
Question
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
Solution
∴ The de Broglie wavelength of electron is 7.278 × 10−12 m
APPEARS IN
RELATED QUESTIONS
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.
A proton and a deuteron are accelerated through the same accelerating potential. Which one of the two has the greater value of de-Broglie wavelength associated with it, and Give reasons to justify your answer.
State de Broglie hypothesis
Use de-Broglie's hypothesis to write the relation for the nth radius of Bohr orbit in terms of Bohr's quantization condition of orbital angular momentum ?
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 is accelerated through a potential difference of 64 volts. What is the de-Broglie wavelength associated with it? To which part of the electromagnetic spectrum does this value of wavelength correspond?
An electron of energy 150 eV has wavelength of 10-10m. The wavelength of a 0.60 keV electron is?
Consider the de-Broglie wavelength of an electron and a proton. Which wavelength is smaller if the two particles have (a) the same speed (b) the same momentum (c) the same energy?
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.
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 will be the change in the energy of the emitted electrons if the intensity of light with same wavelength is doubled?
Gas exerts pressure on the walls of the container because :
A particle is dropped from a height H. The de Broglie wavelength of the particle as a function of height is proportional to
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:
For an electron accelerated from rest through a potential V, the de Broglie wavelength associated will be:
A proton is accelerated through one volt the increase in its kinetic energy is approximately
For what k.e of neutron will the associated de-Broglie wavelength be 1.40 × 10-10 m? mass of neutron= 1.675 × 10-27 kg, h = 6.63 × 10-34 J
The work function of a metal is 4.50 eV. Find the frequency of light to be used to eject electrons from the metal surface with a maximum kinetic energy of 6.06 × 10−19 J.
The de-Broglie wavelength (λ) associated with a moving electron having kinetic energy (E) is given by ______.
What is meant by “Dual nature of matter”?
