- AZeeman effect
- BStark effect
- CLande's splitting
- Dnuclear magnetic spin
Explanation:
In atomic physics, hyperfine structure is the different effects leading to small shifts and splitting in the energy levels of atoms, molecules and ions. The name is a reference to the fine structure which results from the interaction between the magnetic moments associated with electron spin and the electrons' orbital angular momentum. Hyperfine structure, with energy shifts is typically orders of magnitude smaller than the fine structure, results from the interactions of the nucleus (or nuclei, in molecules) with internally generated electric and magnetic fields.
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The energy of hydrogen atom in its ground state is – 13.6 eV. The energy of the level corresponding to the quantum number n is equal 5 is
|
(a) – 5.40 eV |
(b) – 2.72 eV |
(c) – 0.85 eV |
(d) – 0.54 eV |
In hydrogen atom which quantity is integral multiple of
|
(a) Angular momentum |
(b) Angular velocity |
|
(c) Angular acceleration |
(d) Momentum |
An electron is moving with constant velocity along x - axis. If a uniform electric field is applied along y- axis, then its path in the x - y plane will be
|
(a) A straight line |
(b) A circle |
(c) A parabola |
(d) An ellipse |
Three bulbs of 40W, 60W and 100W are arranged in series with 220V. Which bulb has minimum resistance
|
(a) 40W |
(b) 60W |
(c) 100W |
(d) Equal in all bulbs |
Which of the following is not reversible
|
(a) Joule effect |
(b) Peltier effect |
(c) Seebeck effect |
(d) Thomson effect |
In an electron gun, the electrons are accelerated by the potential V. If e is the charge and m is the mass of an electron, then the maximum velocity of these electrons will be
|
(a) |
(b) |
(c) |
(d) |