Question

The molecules of a given mass of gas have a root mean square velocity of 200 ms-1 at 27°C and 1.0 × 105 N m-2 pressure. When the temperature is 127°C and the pressure 0.5 × 105 N m-2, the root mean square velocity in ms-1 is

• A. $\frac{400}{\sqrt3}$
• B. $100\sqrt2$
• C. $\frac{100\sqrt2}{\sqrt3}$
• D. $\frac{100}{3}$

Answer 1

Answer: (A)

$\frac{400}{\sqrt3}$

Answer 2

The correct option is (A): $\frac{400}{\sqrt3}$