First an object is slowly lifted from the bottom(point -`A`) of a shaft of depth `h_(1)=R/2` to
Channel: Doubtnut
Date: 26/01/2020

First an object is slowly lifted from the bottom(point -`A`) of a shaft of depth `h_(1)=R/2` to earth\'s surface (point `-B`) and then it slowly lifted still higher to attain an altitude `h_(2)=R/2` above the earth\'s surface (Point `C`). `W_(1)` and `W_(2)` are the work performed i two cases respectively. Choose the correct option(s)