The circumference of the Bohr orbit for the H atom is related to the de Broglie wavelength associated with the electron revolving around the orbit by which of the following relation?
The largest de Broglie wavelength among the following (all have equal velocity) is
The wavelength of an electron moving with a velocity of 2.05 × 107 m s-1 would be
If the velocity of the electron is 1.6 × 106 . The de Broglie wavelength associated with this electron is
The graphs that represents the variation of momentum of particle with de-Broglie wavelength is
Which of the following statements is wrong?
1. The uncertainty principle is
2. Half-filled and fully filled orbitals have greater stability due to greater exchange energy,
greater symmetry, and a more balanced arrangement.
3. The energy of the 2s orbital is less than the energy of the 2p orbital in the case of hydrogen-like atoms.
4. De-Broglie's wavelength is given by , where m= mass of the particle, v = group velocity of the particle.
The velocity associated with a proton moving at a potential difference of 1000 V is 4.37 × 105 ms–1. If the hockey ball of mass 0.1 kg is moving with this velocity, then the wavelength associated with this velocity would be
The kinetic energy of an electron is 3.0 × 10–25 J. Its wave length would be
1. 8.96 × 10-7 m
2. 4.37 × 10-6 m
3. 1.32 × 10-7 m
4. 2.89 × 10-4 m
If the wavelength of a neutron is 800 pm, then the characteristic velocity associated with the neutron is
1. 494 m s-1
2. 567 m s-1
3. 494 cm s-1
4. 501 m s-1