Consider a collection of a large number of particles each with speed v. The direction of velocity is randomly distributed in the collection….

Q: Consider a collection of a large number of particles each with speed v. The direction of velocity is randomly distributed in the collection. What is the magnitude of the relative velocity between a pairs in the collection

(a) 2V/π

(b) V/ π

(c) 8V/ π

(d) 4V/ π

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Ans: (d)

 

N molecules each of mass m of gas A and 2 N molecules each of mass 2 m of gas B are contained in the same vessel at temperature T….

Q: N molecules each of mass m of gas A and 2 N molecules each of mass 2 m of gas B are contained in the same vessel at temperature T. The mean square of the velocity of molecules of gas B is v2 and the mean square of x component of the velocity of molecules of gas A is w2 . The ratio w2/v2 is

(a) 1

(b) 2

(c) 1/3

(d) 2/3

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Ans: (d)