Find the ratio of diameter of electron in `1^(st)` Bohr orbit to that in `4^(th)`Bohr orbit

Find the ratio of the diameters of 1st Bohr orbit to 3rd Bohr orbit.

Find the ratio of the diameters of 2nd Bohr orbit to 4th Bohr orbit.

The energy of an electron in the 1st Bohr orbit of hydrogen atom is

The ratio of radii of second and first Bohr's orbits of H-atom is ___.

Linear momentum of electron in nth orbit is

The moment of inertia of an electron in n^(th) orbit will be

Define Bohr's orbit or stationary orbit.

Calculate the frequency of revolution of the electron in the first Bohr orbit of H-atom, if the radius of the 1st Bohr orbit is 0.50 A^@ and the velocity of electron in the first orbit = 2.24 xx 10^6 m//s .

Find the linear momentum of the electron in the 2nd Bohr orbit. And hence find the angular momentum of the electron in hydrogen atom.

What is the energy in joules, required to shift the electron of the hydrogen atom from the first Bohr orbit to the fifth Bohr orbit and what is the wavelength of the light emitted when the electron returns to the ground state? The ground state electron energy is -2.18 xx 10^-11 ergs.