Question

In a vessel, the gas is at pressure P. If the mass of all the molecules is halved and their speed is doubled, then the resultant pressure will be

(a) 2 P

(b) P

(c) P/2

(d) 4 P

Answer 1

Correct option (a) 2 P

Explanation:

where m is the mass of each molecule, N is the total number of molecules, V is the volume of the gas. When mass of all the molecules is halved and their speed is doubled, then the pressure will be