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  • For gas in a container, which is true    (i) During two succesive collisions a molecule of gas moves in a straight line with constant velocity. (ii) mean fre

For gas in a container, which is true 

 

(i) During two succesive collisions a molecule of gas moves in a straight line with constant velocity.

(ii) mean free path is inversely proportional to density of a gas i.e. d\alpha\frac{1}{\rho}

 

Option: 1

Only (i)


Option: 2

Only (ii) 


Option: 3

(i) and (ii) 


Option: 4

Both are incorrect


Answers (1)

best_answer

As we learn

Mean free path -

The average distance travelled  by a molecule between two successive collision. And we also knows that the particles moves in a straight line after any collision, directions may be random but trajectory is straight line

For a gas mean free path 

d=\frac{m}{\sqrt{2}\pi d^{2}\rho }

so d \propto \frac{1}{\rho }  and d\; \alpha \; m

 

Posted by

Devendra Khairwa

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