MCQ
Given below are two statements:

Statement $I :$ In a diatomic molecule, the rotational energy at a given temperature obeys Maxwell's distribution.

Statement $II :$ In a diatomic molecule, the rotational energy at a given temperature equals the translational kinetic energy for each molecule.

In the light of the above statements, choose the correct answer from the options given below:

  • A
    Statement $I$ is false but Statement $II$ is true.
  • B
    Both Statement $I$ and Statement $II$ are false.
  • C
    Both Statement $I$ and Statement $II$ are true.
  • Statement $I$ is true but Statement $II$ is false.

Answer

Correct option: D.
Statement $I$ is true but Statement $II$ is false.
d
Translational degree of freedom $=3$

Rotational degree of freedom $=2$

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

How many minimum number of non-zero vectors in different planes can be added to give zero resultant
A force of $0.5\ N$ is applied on the upper block as shown in figure. The coefficient of static friction between the two blocks is $0.1$ and that between the lower block and the surface is zero. The work done by the lower block on the upper block for a displacement of $3\ m$ of the upper block is ...... $J$
A ball is thrown at an angle $\theta$ with the horizontal. Its horizontal range is equal to its maximum height. This is possible only when the value of $\tan \theta$ is ..........
A block of mass $10\, kg$ starts sliding on a surface with an initial velocity of $9.8\, ms ^{-1}$. The coefficient of friction between the surface and bock is $0.5$. The distance covered by the block before coming to rest is: [use $g =9.8\, ms ^{-2}$ ].........$m$
The equation $\overrightarrow {\phi \,} (x,\,t) = \overrightarrow {j\,} \sin \,\left( {\frac{{2\pi }}{\lambda }v\,t} \right)\cos \,\left( {\frac{{2\pi }}{\lambda }x} \right)$ represents
The transverse displacement of a string (clamped at its both ends) is given by $\text{y}(\text{x, t})=0.06\sin(1\pi\text{x/ 3})\cos(120\pi\text{t}).$
All the points on the string between two consecutive nodes vibrate with
  1. Same frequency.
  2. Same phase.
  3. Same energy.
  4. Different amplitude.
Using dimensional analysis, the resistivity in terms of fundamental constants $h, m_{e}, c, e, \varepsilon_{0}$ can be expressed as
The expansion coefficients a, ẞ and y of a solid are related to its volume :
A $2\, m$ long rod of radius $1\, cm$ which is fixed from one end is given a twist of $0.8$ radians. The shear strain developed will be
A flat horizontal board moves up and down in $SHM$ of amplitude $\alpha$. Then the shortest permissible time period of the vibration such that an object placed on the board may not lose contact with the board is