Correct Answer - C
`gamma_("metal") lt gamma_("liquid")`, neglect expansion of metal ball
`W_(1)=W_(0)-p_(0)Vg , W_(0)` : weight of ball in air
`W_(2)=W_(0)-p_(50)Vg`
`p_(50)=(p_(0))/(1+gamma_(l)(50-0) implies p_(50) lt p_(0)`
`W_(2) gt W_(1) or W_(1) lt W_(2)`