The angle of contact between glass and water is `0^@` and surface tension is `70 dyn//cm`. Water rises in a glass capillary up to `6 cm`. Another liquid of surface tension `140 dyn//cm`, angle of contact `60^@` and relative density `2` will rise in the same capillary up toA. 12 cmB. 24 cmC. 3 cmD. 6 cm

The angle of contact between glass and water is `0^@` and surface tens

1.	The angle of contact between glass and water is `0^@` and surface tension is `70 dyn//cm`. Water rises in a glass capillary up to `6 cm`. Another liquid of surface tension `140 dyn//cm`, angle of contact `60^@` and relative density `2` will rise in the same capillary up toA. 12 cmB. 24 cmC. 3 cmD. 6 cm
Answer» Correct Answer - C `(h_(2))/(h_(1))=(sigma_(2)costheta_(2))/(rho_(2))xx(rho_(1))/(sigma_(1)costheta_(1))` Or `(h_(1))/(hl_(2))=(140xx(1)/(2))/(2)xx(1)/(70xx1)` or `h_(2)=(h_(1))/(2)=(6)/(2)cm=3cm`

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