Q99. The speeds of four different molecules are 2 km/s, 3 km/s, 4 km/s, and 5 km/s. What is the root-mean-square (Vrms) speed of these molecules in km/s?Physics — Nust Mock By Dogers 1 — Question 99 of 200A. 3.50B. 3.67C. 13.5D. 54.0Practice more Physics MCQs for entrance exam preparation on Examora.io.← Previous Question Next Question →