Quantum Mechanics Answers

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

describe an simple experiment to determine whether sunglasses in the store are polarizing

Consider 10 non interacting electrons confined in a one-dimensional infinite potential well the energy of the allowed n^th quantum state is given by 0.25n² eV where n=1,2,3,4,5....an eleventh electron is added to the system at 0K this electron will occupy level having the energy
1)0.25eV
2)2eV
3)4eV
4)9eV

The lowest energy that a neutron can have if confined to move along the age of an impedance box of length 10^-14m is
1)3.29×10^-13 J
2)2.05×10^-8 J
3)1.16×10^-13 J
4)7.09×10^-10J