JEE Main 25 July 2021 Shift 2 Solved Paper

A system consists of two types of gas molecules A and B having same number density 2×1025∕m3. The diameter of A and B are 10Å and 5Å respectively. They suffer collision at room temperature. The ratio of average distance covered by the molecule A to that of B between two successive collision is ______ ×10−2