Prove that the velocity of the electron revolving in the first orbit is twice to that of the electron revolving in the second orbit of the hydrogen atom.

What is the electron velocity in the second orbit of hydrogen atom ?

Prove that, velocity of an electron in the first orbit in twice of that revolving in the second orbit of H-atom.

Prove with help of postulate of Bohr's theory that the velocity of an electron revolving in the first orbit of a hydrogen- like atom or ion is double of that revolving in the second orbit .

Velocity of an electron in the 2nd stationary orbit of hydrogen atom

Prove the the velocity of electron revolving in the 1st orbit of H-atom is nearly 10^(-2) times that of light.

Find out the wavelength of the electron orbiting in the ground state of hydrogen atom.

What is the ratio of the areas of the first and the second orbits of an hydrogen atom?

What is the velocity of electrons in'the first Bohr Orbit of Hydrogen atom:

The ratio between the electron velocities in the second and in the third orbits of a hydrogen atom is

The velocity of electron in second shell of hydrogen atom is