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Q.

The mean free path and rms velocity of a nitrogen molecule at a temperature 17° C are 1.2×10-7 m and 5×102 m/s respectively. The time between two successive collisions

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a

2.4×10−10s

b

1.2×10−10s

c

3.4×10−13s

d

3.4×10−10s

answer is A.

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Detailed Solution

Time between two successive collisions t = meanfreepath Vrms=1.2×10−75×102=2.4×10−10 seconds.
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The mean free path and rms velocity of a nitrogen molecule at a temperature 17° C are 1.2×10-7 m and 5×102 m/s respectively. The time between two successive collisions