A system consists of two types of gas molecules A and B having same number density 2 $\times$ 1025/m3. The diameter of A and B are 10 $\mathop A\limits^o$ and 5 $\mathop A\limits^o$ respectively. They suffer collision at room temperature. The ratio of average distance covered by the molecule A to that of B between two successive collision is ____________ $\times$ 10$-$2
Answer (integer)
25
Solution
$\because$ mean free path<br><br>$\lambda = {1 \over {\sqrt 2 \pi {d^2}n}}$<br><br>${{{\lambda _1}} \over {{\lambda _2}}} = {{d_2^2{n_2}} \over {d_1^2{n_1}}}$<br><br>$= {\left( {{5 \over {10}}} \right)^2} = 0.25 = 25 \times {10^{ - 2}}$
About this question
Subject: Physics · Chapter: Thermodynamics · Topic: Zeroth and First Law
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