A cylindrical tube AB of length l, closed at both ends contains an ideal gas of 1 mol having molecular weight M. The tube is rotated in a horizontal plane with constant angular velocity ω about an axis perpendicular to AB and passing through the edge at end A, as shown in the figure. If P A and P B are the pressures at A and B respectively, then (Consider the temperature is same at all points in the tube)

(A) P B =P A exp (Mω²l²/2RT)

(C) P B =P A exp (Mω²l²/3RT)

Kinetic Theory of Gases: JEE Main 2026 Physics question

JEE Main 2026 · 22 Jan, Morning shift · Q29

JEE Main 202622 Jan, Morning shiftPhysicsMediumKinetic Theory of Gases52× since 2002

A cylindrical tube

AB

of length

l

, closed at both ends contains an ideal gas of 1 mol having molecular weight

M

. The tube is rotated in a horizontal plane with constant angular velocity

\omega

about an axis perpendicular to

AB

and passing through the edge at end

A

, as shown in the figure. If

P_A

and

P_B

are the pressures at

A

and

B

respectively, then (Consider the temperature is same at all points in the tube)

JEE Main 2026 Kinetic Theory of Gases Question with Solution (22 Jan Morning shift, Q29) | JEE Arc