JEE Main 2022 · 27 Jul · Shift 1 · Physics Q39

PhysicsSingle correct+4 / -1Question 39 of 90

Same gas is filled in two vessels of the same volume at the same temperature. If the ratio of the number of molecules is 1:4, then

A. The r.m.s. velocity of gas molecules in two vessels will be the same.

B. The ratio of pressure in these vessels will be 1:4.

C. The ratio of pressure will be 1:1.

D. The r.m.s. velocity of gas molecules in two vessels will be in the ratio of 1:4.

Choose the correct answer from the options given below :

A and C only

B and D only

A and B only

C and D only

Answer and worked solution

Official answer: C

Same temperature, so the same $v_{rms}$ (A). Same V and T, so $p\propto N$ : 1:4 (B).

(C)

Topics:Molecular speeds Ideal gas equation

JEE Main 2022 · 27 Jul · Shift 1, Physics question 39