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First an object is slowly lifted from th...

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)

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