MCQ
The hyperfine lines in the spectrum is related to:
  • A
    Zeeman effect
  • B
    Stark effect
  • C
    Lande's splitting
  • nuclear magnetic spin

Answer

Correct option: D.
nuclear magnetic spin

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.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

A compass needle is free to rotate in a horizontal plane. It’s magnetic moment is $60\ Am^2$ . When it is pointing geographical north, it experiences a torque of $1.2 × 10^{-3}\ Nm$ due to earth’s magnetic field. If earth’s magnetic field in horizontal direction is $40 × 10^{-6}\ T$ , what is declination.....$^o$ at that place ?
Atomic power station at Tarapore has a generating capacity of $200\, MW.$ The energy generated in a day by this station is
In a P-type semiconductor
A long straight wire, carrying current $I$ is bent at its mid-point to form an angle of $45^{\circ}$. Induction of magnetic field (in tesla) at point $P$, distant $R$ from point of bending is equal to
An electron is moving along the positive x-axis. You want to apply a magnetic field for a short time so that the electron may reverse its direction and move parallel to the negative x-axis. This can be done by applying the magnetic field along:
In $YDSE$, let $S_1$ and $S_2$ be the two slits, and $C$ be the centre of screen. If $\angle \,{S_1}\,C\,{S_2} = \theta $ and $\lambda $ is the wavelength, the fringe width is
In the case of constants $\alpha$ and $\beta$ of a transistor
On heating a liquid, the refractive index generally
Given below are two statements:

Statement $I$ : In hydrogen atom, the frequency of radiation emitted when an electron jumps from lower energy orbit $\left( E _{1}\right)$ to higher energy orbit $\left( E _{2}\right)$, is given as $hf = E _{1}- E _{2}$.

Statement $II$ : The jumping of electron from higher energy orbit $\left(E_{2}\right)$ to lower energy orbit $\left(E_{1}\right)$ is associated with frequency of radiation given as $f$ $=\left( E _{2}- E _{1}\right) / h$

This condition is Bohr's frequency condition. In the light of the above statements, choose the correct answer from the options given below

The current passing through a choke coil of 5 henry is decreasing at the rate of 2 ampere/sec. The e.m.f. developing across the coil is