(a)(S/r) cos θ (b) (2S/r) cos θ (c) S/r cos θ (d) 2S/r cos θ Ans. b (7)
11. A capillary tube of radius r is dipped in a liquid of density ρ and surface tension S. If the angle of contact is θ
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- 11. A capillary tube of radius r is dipped in a liquid of density ρ and surface tension S. If the angle of contact is θ