Water rises to a height of 15 mm in a capillary tube having cross-sectional area 'A'. If cross-sectional area of the tube is made ' 3 A ′ then the water will rise to a height of

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Water rises to a height of 15 mm in a capillary tube having cross-sectional area 'A'. If cross-sectional area of the tube is made ' 3 A ′ ​ then the water will rise to a height of

TestHub · Accepted Answer

h ∝ r 1 ​ since A = π r 2 , A ​ ∝ r ∴ h ∝ A ​ 1 ​ ∴ h 1 ​ h 2 ​ ​ = A 2 ​ A 1 ​ ​ ​ = 3 ​ ∵ A 2 ​ A 1 ​ ​ = 3 ∴ h 2 ​ = 3 ​ h 1 ​ = 3 ​ × 15 × 1 0 − 3 m = 15 3 ​ × 1 0 − 3 m

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