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Question

The expression for mean free path is :

A
λ=KT2πd2P
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B
λ=πdPkT
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C
λ=πd2PkT
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D
λ=kTπdP
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Solution

The correct option is A λ=KT2πd2P
The formula for mean free path is given by

λ=KT2πd2P

where K=Boltzmann's constant
T= temperature( in kelvin )
d= The diameter of the gas particles
P= pressure

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