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Q.

The mean free path of molecules of a certain gas at STP is 1500d, where d is the diameter of the gas molecules. While maintaining the standard pressure, the mean free path of the molecules at 373K is approximately

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a

750d

b

1500d

c

1098d

d

2049d

answer is B.

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Detailed Solution

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As we know, λ∝T

⇒λ2=λ1T2T1=1500d×373273=2049d

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