JEE Mains · Physics · STD 11 - 12 . kinetic theory of gases
Consider two boxes containing ideal gases A and B such that their temperatures, pressures and number densities are same. The molecular size of A is half of that of B and mass of molecule A is four times that of B. If the collision frequency in gas B is \( 32\times10^{18}/s \) then collision frequency in gas A is__________/s.
- A \( 32\times10^{18} \)
- B \( 4\times10^{18} \)
- C \( 2\times10^{18} \)
- D \( 8\times10^{18} \)
Answer & Solution
Correct Answer
(B) \( 4\times10^{18} \)
Step-by-step Solution
Detailed explanation
Collision frequency (z) \( =\sqrt{2}\pi d^{2}N\sqrt{\frac{8RT}{\pi M}} \) Temp, N are same \( Z\propto\frac{d^{2}}{\sqrt{M}} \) \( d_{A}=\frac{d_{B}}{2} \) \( M_{A}=4M_{B} \)…
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
-
In the given circuit the sliding contact is pulled outwards such that electric current in the circuit changes at the rate of \(8 \mathrm{~A} / \mathrm{s}\). At an instant when R is \(12 \Omega\), the value of the current in the circuit will be ______ A.JEE Mains 2025 Medium - Drift speed of electrons, when \(1.5\, A\) of current flows in a copper wire of cross section \(5\, mm^2\), is \(v\). If the electron density in copper is \(9 \times 10^{28}\, m^3\) the value of \(v\) in \(mm/s\) is close to (Take charge of electron to be \(= 1.6 \times 10^{-19}\, C\))JEE Mains 2019 Medium
- The length of wire becomes \(l_1\) and \(l_2\) when \(100\,N\) and \(120\,N\) tensions are applied respectively. If \(10l_2=11l_1\), the natural length of wire will be \(\frac{1}{x} l_1\). Here the value of \(x\) is ........JEE Mains 2023 Medium
- A coin is placed on a disc. The coefficient of friction between the coin and the disc is \(\mu\). If the distance of the coin from the center of the disc is \(r\), the maximum angular velocity which can be given to the disc, so that the coin does not slip away, is _______.JEE Mains 2024 Hard
- A solenoid has a core made of material with relative permeability \(400\). The magnetic field produced in the interior of solenoid is \(1.0\) T. The magnetic intensity in SI units is \(\alpha \times 10^5\). The value of \(\alpha\) is ______.
(Free space permeability \(\mu_0=4\pi \times 10^{-7}\) SI units.)JEE Mains 2026 Medium - In the Young's double slit experiment, the distance between the slits varies in time as \({d}({t})={d}_{0}+{a}_{0}\, sin\omega \,t\) ; where \({d}_{0}, \omega\) and \(a_{0}\) are constants. The difference between the largest fringe width and the smallest fringe width obtained over time is given as :JEE Mains 2021 Hard
More PYQs from JEE Mains
- Let the six numbers \(a_1, a_2, a_3, a_4, a_5, a_6\) be in \(A.P.\) and \(a_1+a_3=10\). If the mean of these six numbers is \(\frac{19}{2}\) and their variance is \(\sigma^2\), then \(8 \sigma^2\) is equal toJEE Mains 2023 Hard
- Two forces having magnitude \(A\) and \(\frac{ A }{2}\) are perpendicular to each other. The magnitude of their resultant isJEE Mains 2023 Easy
- The dimensions of angular momentum , latent heat and capacitance are, respectively.JEE Mains 2013 Hard
- A block of mass 2 kg is attached to one end of a massless spring whose other end is fixed at a wall. The spring-mass system moves on a frictionless horizontal table. The spring's natural length is 2 m and spring constant is \(200 \mathrm{~N} / \mathrm{m}\). The block is pushed such that the length of the spring becomes 1 m and then released. At distance \(\mathrm{x} \mathrm{m}(\mathrm{x} \lt 2)\) from the wall. the speed of the block will be :JEE Mains 2025 Medium
- \(4 \int_0^1\left(\frac{1}{\sqrt{3+x^2}+\sqrt{1+x^2}}\right) d x-3 \log _e(\sqrt{3})\) is equal to :JEE Mains 2025 Medium
- The value of \(\log _{ e } 2 \frac{ d }{ dx }\left(\log _{\cos x } \operatorname{cosec} x \right)\) at \(x=\frac{\pi}{4}\) is.JEE Mains 2022 Medium