List of top Physics Questions on Mean Free Path

एक आदर्श गैस A में अणुओं का माध्य मुक्त पथ, एक अन्य आदर्श गैस B में अणुओं के माध्य मुक्त पथ का आधा है। गैस A के गोलाकार अणुओं का व्यास, गैस B के अणुओं के व्यास का दोगुना है। यदि गैसों A और B के संख्या घनत्व क्रमशः \(n_A\) और \(n_B\) हैं, तो सही विकल्प है:
The mean free path of molecules in an ideal gas A is half that of another ideal gas B. The diameter of the spherical molecules of gas A is twice the diameter of the molecules of gas B. If number densities of the gases A and B are \(n_A\) and \(n_B\), respectively, then
આદર્શ ગેસ Aમાં અણુઓનો મીન ફ્રી પાથ બીજા આદર્શ ગેસ Bના અર્ધા છે. ગેસ Aના અણુઓનો વ્યાસ ગેસ Bના અણુઓના વ્યાસના બમણા છે. જો સંખ્યા ઘનતા \( n_A \) અને \( n_B \) હોય, તો સાચો વિકલ્પ છે:
Estimate the mean free path and collision frequency of a nitrogen molecule in a cylinder containing nitrogen at 2.0 atm and temperature 17 0C. Take the radius of a nitrogen molecule to be roughly 1.0 Å. Compare the collision time with the time the molecule moves freely between two successive collisions (Molecular mass of N2 = 28.0 u).
At what temperature is the root mean square speed of an atom in an argon gas cylinder equal to the rms speed of a helium gas atom at – 20 °C ? (atomic mass of Ar = 39.9 u, of He = 4.0 u).