Question

At a pressure of $24\times {10}^{5}dyne/c{m}^2$, the volume of $O_2$ is $10$ litre and mass is $20gm$. The 'rms' velocity will be (in m/sec).

• A. $800$
• B. $400$
• C. $600$
• D. $200$

Answer 1

The correct option is C $600$

$V_{rms}=\sqrt{\frac{3PV}{m}}=\sqrt{\frac{3\times 24\times {10}^4\times 10\times {10}^{-3}}{20\times {10}^{-3}}}$

$=600m/s$