Water rises in a capillary tube of diameter 0.2 x 10-2m, upto a height of 1.5cm. The surface tension of water is 1) 73.5 ×10-3 Nm-¹ 3) 35.7 x 10-³ Nm-¹ 2) 73.5 × 10-³dynecm¹ 4) 43.5 x 10-³Nm™¹

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