The de Broglie wavelength of electron of He+ ion is 3.329Å. If the photon emitted upon de-excitation of this He+ ion is made to hit H atom in its ground state so as to liberate electron from it, what will be the de Broglie's wavelength of photoelectron ?
(A) 0.1518 Å
(B) 6.1518 Å
(C) 2.3518 Å
(D) 4.1218 Å
Calculate the de Broglie wavelength of an -particle emitted from radium having an energy of 4.8 MeV.
(Mass of -particle=6.6 x 10-24 g; h=Planck's constant = 6.626 x 10-27 erg sec)
(A) 6.18 x 10-13cm
(B) 0.58 x 10-8cm
(C) 6.58 x 10-13cm
(D) 4.12 x 10-11cm
What is the ratio of the time period of revolution of electron He+ ion sample in the orbit where the path length is three time the de-broglies wavelength to the time period of revolution in the ground state –
For particles having same kinetic energy, the de Broglie wavelength is-
(A) Directly proportional to its velocity
(B) Inversely proportional to its velocity
(C) Independent of velocity and mass
An electron, practically at rest, is initially accelerated through a potential difference of 100 volts. It then has a de Broglie wavelength=1Å. It then get retarded through 19 volts and then it has wavelength 2 Å. A further retardation through 32 volts changes the wavelength to 3.
What is (3-2)/1?
A cricket ball of 0.5 kg is moving with a velocity of 100 ms-1. The wavelength associated with its motion is:
2. 6.6 x 10-34m
3. 1.32 x 10-35m
4. 6.6 x 10-28m
If the velocity of a particle is reduced to 1/3rd, then percentage increase in its de-broglie wavelength will be:-
Which of the following has the largest de Broglie wavelength (all have equal velocity)
on two particles A and B are plotted against de-Broglie wavelengths. Where V is the potential on the particles. Which of the following relation is correct about the mass of particles?