Quantum Mechanics Answers

The relativistic momentum of a neutron(rest mass energy=940 MeV)whose kinetic energy k=200 MeV is given by

The ground state wave function of a particle in a 3D potential is given by ¥=Ae^{ar^3}, where A is the normalisation constant. The value of A is given by

A projectile is thrown at an angle theta Such that it is just able to cross a vertical wall at heighest point of journey the angle theta at which the projectile is thrown is given by?

Consider a particle confined in a 1D box of length L. The energy spacing between any two consequtive energy level is propotional to

Hydrogen atom problem with one electron moving around the nucleus can be treated as
1)gravitational interaction
2)Central force problem
3)harmonic oscillator
4)square well potential problem

what is the donor concentration in n-type germanium of 1ohm-cm resistivity at 300K given electron mobility is equals to 3900cm²/V.s

If a beam of electrons impinges on an energy barrier of height 0.03 eV and of infinite width. Find the fraction of electrons reflected and transmitted at the barrier if the impinging electrons
are having energy 0.04 eV.

Degeneracy means
1) same energy different wave functions 2)different energies same wave functions 3)different energies different wave functions

if n and n1 and n2 represent the total quantum numbers and new parabolic Quantum numbers respectively then the shift observed when a field F V/cm is applied is
1)proportional to F²
2) proportional to n²
3)inversely proportional to charge number of atom
4)proportional to (n2-n1)²

Calculate in ev the energy of a quantum of light wavelength 53000A