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JEE Mains 03-Sep-2020 Shift 1 Solved Paper

Section: Physics

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Question : 23 of 75

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When a long glass capillary tube of radius 0.015 cmis dipped in a liquid, the liquid rises to a heightof 15 cm within it. If the contact angle betweenthe liquid and glass to close to 0°, the surface tension of the liquid, in milliNewton m−1, is [ρ(liquid)=900 kgm−3, g=10 ms−2] (Give answerin closest integer) ______.

[3 Sep 2020 Shift 1]

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