Question

The stationary Bohr's orbit can be readily explained on the basis of wave nature of electron if it is assumed that:

• A. wave in any of the orbits is the stationary wave.
• B. the position of maxima and minima of wave does not change with time.
• C. the length of the circular orbit must be an integral multiple of the wavelength
• D. wave in any of the orbit is not stationary wave

Answer 1

Answer: (A), (B), (C)

The correct options are
A the position of maxima and minima of wave does not change with time.
B wave in any of the orbits is the stationary wave.
C the length of the circular orbit must be an integral multiple of the wavelength

As long as an electron is revolving in an orbit it neither loses nor gains energy. Hence these orbits are called stationary states. Each stationary state is associated with a definite amount of energy and it is also known as energy levels. The greater the distance of the energy level from the nucleus, the more is the energy associated with it. Ordinarily an electron continues to move in a particular stationary state without losing energy.Such a stable state of the atom is called as ground state.
So according to this wave in any of the orbits is the stationary wave and the position of maxima and minima of wave does not change with time.
Also, the length of the circular orbit must be an integral multiple of the wavelength.