A container is partially filled with a liquid of density `rho_2` A capillary tube of radius r is vertically inserted in this liquid. Now another liquid of density `rho_1(rho_1ltrho_2)` is slowly poured in the container to a height h as shown. There is only denser liquid in the capillary tube. The rise of denser liquid in the capillary tube is also `h`. Assuming zero contact angle, the surface tension of heavier liquid isA. `r rho_(2) gh`B. `2pirrho_(2) gh`C. `r/2 (rho_(2)-rho_(1))gh`D. `2pir(rho_(2)-rho_(1)) gh`

A container is partially filled with a liquid of density `rho_2` A ca

1.	A container is partially filled with a liquid of density `rho_2` A capillary tube of radius r is vertically inserted in this liquid. Now another liquid of density `rho_1(rho_1ltrho_2)` is slowly poured in the container to a height h as shown. There is only denser liquid in the capillary tube. The rise of denser liquid in the capillary tube is also `h`. Assuming zero contact angle, the surface tension of heavier liquid isA. `r rho_(2) gh`B. `2pirrho_(2) gh`C. `r/2 (rho_(2)-rho_(1))gh`D. `2pir(rho_(2)-rho_(1)) gh`
Answer» Correct Answer - C `P_(0)+rho_(1)g h-rho_(2) g h +(2T)/r=P_(0)` `rArr T=r/2 (rho_(2)-rho_(1)) gh`

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