Atomic & Molecular Physics (CSIR (Council of Scientific & Industrial Research) Physical Sciences): Questions 4 - 6 of 19

Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 463 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. View Sample Explanation or View Features.

Rs. 300.00 or

Question number: 4

» Atomic & Molecular Physics » Zeeman, Paschen-Bach & Stark Effects

Appeared in Year: 2014

MCQ▾

Question

An atomic transition 1P Equation 1S in a magnetic field 1 Tesla shows Zeeman splitting. Given that the Bohr magnetonEquation , and the wavelength corresponding to the transition is 250 nm, the separation in the Zeeman spectral lines is approximately, (December)

Choices

Choice (4) Response

a.

0.001 nm

b.

10 nm

c.

1.0 nm

d.

0.1 nm

Question number: 5

» Atomic & Molecular Physics » Relativistic Corrections for Energy Levels of Hydrogen Atom

Appeared in Year: 2013

MCQ▾

Question

The energy of an electron in a band as a function of its wave vector Equation is given by Equation , where Equation and Equation are constants. The effective mass of the electron near the bottom of the band is – (Dec -2013)

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 6

» Atomic & Molecular Physics » Diatomic Molecules » Vibrational

Appeared in Year: 2013

MCQ▾

Question

The phonon dispersion for the following one – dimensional diatomic lattice with masses Equation and Equation (as shown in figure)

Diagram of phonon dispersion

Diagram of Phonon Dispersion

In figure the phonon dispersion for the following one – dimensional diatomic lattice with masses M1 and M2.

is given by, Equation

where Equation is the lattice parameter and K is the spring constant. The velocity of sound is – (June)

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

f Page
Sign In