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The pure rotational level of a molecule in the far-infrared region follows the formula F(J) = BJ(J + 1), where F(J) is the energy of the rotational level with quantum number J and B is the rotational constant. The lowest rotational energy gap in rotational Raman spectrum is

The pure rotational level of a molecule in the far-infrared region follows the formula F(J) = BJ(J + 1), where F(J) is the energy of the rotational level with quantum number J and B is the rotational constant. The lowest rotational energy gap in rotational Raman spectrum is Correct Answer 4B

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Consider the following statements about molecular spectra:
P. CH4 does not give pure rotational Raman lines
Q. SF6 could be studied by rotational Raman spectroscopy
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S. CH3CH3 shows vibrational Raman and infrared absorption lines
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Choose the right combination of correct statements.
The allowed rotational energy levels of a rigid hetero-nuclear diatomic molecule are expressed as εJ = BJ (J + 1), where B is the rotational constant and J is a rotational quantum number.
In a system of such diatomic molecules of reduced mass μ, some of the atoms of one element are replaced by a heavier isotope, such that the reduced mass is changed to 1.05μ. In the rotational spectrum of the system, the shift in the spectral line, corresponding to a transition J = 4 → J = 5, is
Which of the following statements concerning the quantum numbers is correct? (i) The Angular quantum number determines the three-dimensional shape of the orbital. (ii) The Principal quantum number determines the orientation and energy of the orbital. (iii) The Magnetic quantum number determines the size of the orbital. (iv) Spin quantum number of an electron determines the orientation of the spin of the electron relative to the chosen axis.
The far infrared rotational absorption spectrum of a diatomic molecule shows equidistant lines with spacing 20 cm-1. The position of the first stokes line in the rotational Raman spectrum of this molecule is
Indian physicist CV Raman was the first Indian to win the Nobel Prize in Physics in the year 1930 for his discovery of the Raman Effect, which is the scattering of light in different substances. Which of the following is NOT in line with the given statement? I:  Physicist CV Raman was the first-ever Indian to win a Nobel Prize. II: In the year 1930, CV Raman discovered the Raman Effect. 
For a diatomic molecule with the vibrational quantum number n and rotational quantum number J, the vibrational level spacing ΔEn = En - En - 1 and the rotational level spacing ΔEJ - EJ - EJ - 1 are approximately
Raman remembers that his marriage is before 20th July and after 13th July. His mother remembers that Raman’s marriage is after 16th July. His father remembers that Raman’s marriage is before 19th July. On which date of July is Raman’s marriage?
Twelve years ago, Raman’s age was six years more than half the age of his mother. Six years from now Raman’s mother will be 1.5 times as old as Raman. What is Raman’s present age?
A pure rotational Raman spectrum of a linear diatomic molecule is recorded using electromagnetic radiation of frequency $${\nu _e}$$ . The frequency of two consecutive Stokes lines are
A particle is incident with a constant energy E on a one-dimensional potential barrier as shown in the figure.
Quantum Mechanics mcq question image
The wave functions in regions I and II are respectively