Question

The speed of 5 molecules of a gas (in arbitrary units) are as follows : 2, 3, 4, 5, 6. The root mean square speed for these molecules is-

• A. 2.91
• B. 3.52
• C. 4.00
• D. 4.24

Answer 1

Answer: (D)

4.24

Answer 2

v_rms = $\sqrt{\frac{{v_{1}}^{2} + {v_{2}}^{2} + {v_{3}}^{2} + {v_{4}}^{2} + {v_{5}}^{2}}{5}}$