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JEE Main 2014 Physics question

PhysicsKinetic Theory of GasesJEE Main 2014

Modern vacuum pumps can evacuate a vessel down to a pressure of atm. at room temperature (300 K). Taking R = 8.3 J , 1 atm = Pa and , the mean distance between molecules of gas in an evacuated vessel will be of the order of :

Answer: (2)

Solution

Pa and J/K. The number density is $Missing argument for \frac\frac NV = =

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Question ID VK-104355