Two objects `A` and `B` are of lengths `5cm` and `7cm` determined with errors `0.1cm` and
Channel: Doubtnut
Date: 09/02/2020

Two objects `A` and `B` are of lengths `5cm` and `7cm` determined with errors `0.1cm` and `0.2cm` respecitively. The error in determining (a) the total length and (b) the difference in their lengths are