Define
Bohr's orbit or stationary orbit.

Derive an expression for the wavelength of spectral line when an electron jumps from higher stationary orbit to lower stationary 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.

Bohr's orbits are called stationary states because

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

Define Bohr Magneton.

The radii of Bohr's orbit are directly proportional to

Show that linear velocity of electron in Bohr's orbit is inversely proportional to principal quantum number.

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.

Define the following Geo-stationary satellite