JEE Mains · Physics · STD 11 - Kinetic theory of gases
- JEE Mains 2019
- Medium
- MCQ
An \(HCl\) molecule has rotational, translational and vibrational motions. If the \(rms\) velocity of \(HCl\) molecules in its gaseous phase is \(\bar v ,\,m\) is its mass and \(k_B\) is Boltzmann constant, then its temperature will be
Pick an option to check your answer.
Answer & Solution
Correct Answer
(A) \(\frac{{m{\bar v ^{ 2}}}}{{3{k_B}}}\)
Step-by-step Solution
Detailed explanation
According to equipartion energy theorem
\(\frac{1}{2} m\left(v_{m s}^{2}\right)=3 \times \frac{1}{2} k_{b} T\)
\(T=\frac{m \bar{V}_{r m s}^{-2}}{3 k}\)
More questions from Physics
- The energy stored in the electric field produced by a metal sphere is \(4.5\, J\). lf the sphere contains \(4\,\mu C\) charge, its radius will be.......\(mm\) : [Take : \(\frac{1}{{4\pi {\varepsilon _0}}} = 9 \times {10^9}\,N - {m^2}\,/{C^2}\, ]\)JEE Mains 2017 Hard
- A resistor dissipates \(192\, {J}\) of energy in \(1\, {s}\) when a current of \(4\, {A}\) is passed through it. Now, when the current is doubled, the amount of thermal energy dissipated in \(5 \,{s}\) in \(.....\,J.\)JEE Mains 2021 Medium
- Two plane mirrors \({M}_{1}\) and \({M}_{2}\) are at right angle to each other shown. A point source \('P'\) is placed at \('a'\) and \('2a'\) meter away from \({M}_{1}\) and \({M}_{2}\) respectively. The longest distance between the images thus formed is : (Take \(\sqrt{5}=2.3\) )
JEE Mains 2021 Hard - A thin prism \(P_1\) with an angle \(6^{\circ}\) and made of glass of refractive index \(1.54\) is combined with another prism \(P _2\) made from glass of refractive index \(1.72\) to produce dispersion without average deviation. The angle of prism \(P_2\) is \(........{}^{\circ}\)JEE Mains 2023 Medium
- A proton, a deuteron and an \(\alpha-\)particle with same kinetic energy enter into a uniform magnetic field at right angle to magnetic field. The ratio of the radii of their respective circular paths isJEE Mains 2022 Medium
- '\(n\)' moles of an ideal gas undergoes a process \(A \rightarrow B\) as shown in the figure. The maximum temperature of the gas during the process will be
JEE Mains 2016 Hard
More PYQs from JEE Mains
- Two electric dipoles \(A, B\) with respective dipole moments \(\overrightarrow {{d_A}} = - 4\,qa\,\hat i\) and \(\overrightarrow {{d_B}} = 2\,qa\,\hat i\) are placed on the \(x-\) axis with a separation \(R\), as shown in the figure. The distance from \(A\) at which both of them produce the same potential is
JEE Mains 2019 Hard - A parallel plate capacitor is filled equally (half) with two dielectrics of dielectric constant \(\varepsilon_1\) and \(\varepsilon_2\), as shown in figures. The distance between the plates is d and area of each plate is A. If capacitance in first configuration and second configuration are \(C_1\) and \(C_2\) respectively, then \(\frac{C_1}{C_2}\) is :

JEE Mains 2025 Hard - Match List - I with List - II.
Choose the correct answer from the options given below :List - I List - II A. Boltzmann constant I. \([M^{-1}L^3T^{-2}]\) B. Stefan's constant II. \([ML^2T^{-1}]\) C. Planck's constant III. \([ML^2T^{-2}K^{-1}]\) D. Gravitational constant IV. \([ML^0T^{-3}K^{-4}]\) JEE Mains 2026 Medium