Physics · 2023
JEE Main · 6 April 2023, Shift 1 · Q45
The number of air molecules per cm^3 increased from 3 × 10^19 to 12 × 10^19. The ratio of collision frequency of air molecules before and after the…
The number of air molecules per $\displaystyle \mathrm{cm}^3$ increased from $\displaystyle 3 \times 10^{19}$ to $\displaystyle 12 \times 10^{19}$. The ratio of collision frequency of air molecules before and after the increase in number respectively is :
Official answer
From NTA’s final answer key for this paper.
(1)
$\displaystyle 0.25$
More from Kinetic Theory of Gases
- A container of fixed volume contains a gas at 27°C. To double the pressure of the gas, the temperature of gas should be raised to ____ °C.2025
- A sample contains mixture of helium and oxygen gas. The ratio of root mean square speed of helium and oxygen in the sample, is:2024
- A gas mixture consists of 2 moles of oxygen and 4 moles of neon at temperature T. Neglecting all vibrational modes, the total internal energy of the…2023
- An air bubble of volume 2.9 cm^3 rises from the bottom of a swimming pool of 5 m deep. At the bottom of the pool water temperature is 17 °C. The…2026
- Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R Assertion A: If the average kinetic energy of…2026
- If the r. m. s speed of chlorine molecule is 490 m / s at 27^° C, the r.m. s speed of argon molecules at the same temperature will be (Atomic mass of…2023
- The ratio of vapour densities of two gases at the same temperature is 4/25, then the ratio of r.m.s. velocities will be:2025
- The total kinetic energy of 1 mole of oxygen at 27^° C is: [Use universal gas constant (R)=8.31 J / mole K ]2024
JEE Main 2023 Physics question, with the answer from NTA’s final answer key. Where our answers come from.