You are given two different vernier callipers `A` and `B` haiving `10` divisions on vernier s
Channel: Doubtnut
Date: 09/02/2020

You are given two different vernier callipers `A` and `B` haiving `10` divisions on vernier scale that coincide with `9` divisions on the main scale each. If `1 cm` of main scale `A` is divided into `10` parts and that of `B` in `20` parts, then least count of `A` and `B` are