1.

Three liquids of densities rho_(1) , rho_(2) and rho_(3) ( with rho_(1) gt rho_(2) gt rho_(3) ), having the same value of surface tension T, rise to the same height in three identical capillaries. The angles of contact theta_(1) , theta_(2) and theta_(3) obey

Answer»

`(PI)/(2) gt theta_(1)gt theta_(2) gt theta_(3) ge 0`
`0 LE theta_(1) LT theta_(2) lt theta_(3) lt (pi)/(2)`
`(pi)/(2) lt theta_(1)lt theta_(2) lt theta_(3) lt pi`
`pi gt theta_(1)gt theta_(2) gt theta_(3) gt (pi)/(2)`

Answer :B


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