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JEE MAIN 2025
28-01-2025 SHIFT-2
Question
The ratio of vapour densities of two gases at the same temperature is $\frac{4}{25}$, then the ratio of r.m.s. velocities will be:
Select the correct option:
A
$\frac{4}{25}$
B
$\frac{2}{5}$
C
$\frac{25}{4}$
D
$\frac{5}{2}$
✓ Correct! Well done.
✗ Incorrect. Try again or view the solution.
Solution
$\frac{\rho_{1}}{\rho_{2}}=\frac{4}{25}$
Ratio of rms velocities $=\sqrt{\frac{\rho_{2}}{\rho_{1}}}=\frac{5}{2}$
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