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  4. The average distance traversed by a molecule of gas at temperature T between two successive collisions is called its mean free path which can be expressed by (P is pressure of gas, K is boltzmann constant, d diameter of molecule)

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Q. The average distance traversed by a molecule of gas at temperature T between two successive collisions is called its mean free path which can be expressed by (P is pressure of gas, K is boltzmann constant, d diameter of molecule)

Kinetic Theory

Solution:

Correct answer is (c) $\frac{KT}{\sqrt2 \pi d^2P}$