COMEDK · Physics · 14. Kinetic Theory of Gases
The mean energy per molecule for a diatomic gas is
- A \(\dfrac{5 k_B T}{2 N}\)
- B \(\dfrac{3 k_B T}{2}\)
- C \(\dfrac{5 k_B T}{N}\)
- D \(\dfrac{5 k_B T}{2}\)
Answer & Solution
Correct Answer
(D) \(\dfrac{5 k_B T}{2}\)
Step-by-step Solution
Detailed explanation
A diatomic gas molecule at a temperature \(T\) possesses degrees of freedom associated with its motion. For a rigid diatomic molecule, there are 3 translational degrees of freedom and 2 rotational degrees of freedom, totaling 5 degrees of freedom (\(f = 5\)). According to the…
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from Physics
- The nuclear forces
a. are central forces, independent of the spin of the nucleons.
b. have a short-range dominant over a distance of about a few fermi
c. are stronger being hundred times stronger than that of electromagnetic forces.
d. are independent of the nuclear charge.
Which of the above is not true?COMEDK 2025 Easy - A glass hemisphere of radius \(0.1 \mathrm{~cm}\) and refractive index \(1.5\) is placed over a spot on a table and the spot is viewed from above. The spot appears to be
COMEDK 2012 Hard - A proton and an alpha particle are subjected to same potential difference \(V\). Their de-Broglie wavelengths \(\lambda_{p}, \lambda_{\alpha}\) will be in the ratioCOMEDK 2016 Easy
- An electron and a proton having mass \(m_e\) and \(m_p\) respectively, initially at rest, move through the same distance '\(s\)' in a uniform electric field '\(E\)'. If the time taken by them to cover that distance is \(t_e\) and \(t_p\) respectively, then \(t_e / t_p\) is equal to:COMEDK 2023 Medium
- A bar magnet of length 6 cm is placed in the magnetic meridian with N pole pointing towards the geographical north. Two neutral points, separated by a distance of 8 cm are obtained on the equatorial axis of the magnet. If \(B_H = 1.2 \times 10^{-5}\text{ T}\), then the pole strength of the magnet is:COMEDK 2022 Medium
- Which of the following series spectrum of hydrogen atom lies in ultraviolet region?COMEDK 2022 Easy
More PYQs from COMEDK
- A body is projected vertically upwards. The times corresponding to height \(h\) while ascending and while descending are \(t_1\) and \(t_2\), respectively. Then, the velocity of projection will be (take, \(g\) as acceleration due to gravity)COMEDK 2023 Medium
- The conductivity of a semiconductor increases with increase in temperature because
A) number density of free current carriers increases
B) relaxation time increases
C) both number density of carriers and relaxation time increase
D) number density of current carriers increases, relaxation time decreases but effect of decrease in relaxation time is much less than increase in number densityCOMEDK 2024 Medium - \(\left|\begin{array}{ccc}1 & 1 & 1 \\ a & b & c \\ a^{2}-b c & b^{2}-c a & c^{2}-a b\end{array}\right|\) is equal toCOMEDK 2014 Medium
- The enolic form of butanone containsCOMEDK 2024 Medium
- If \(A=\left[\begin{array}{cc}1 & \log _{b} a \\ \log _{a} b & 1\end{array}\right]\), then \(|A|\) is equal toCOMEDK 2012 Easy
- Identify the wrong statement in the following. Coulomb's law correctly describes the electric force thatCOMEDK 2017 Easy