A vertical capillary tube with inside radius 0.25 {mm} is submerged into water so that the length of its part protruding over the water surface is equal to 25 {mm}. Surface tension of water is 73 \\times10^{-3} {N} \/ {m} and angle of contact is zero degree for glass and water, acceleration due to gravity is 9.8 {m} \/ {s}^{2}. Then value of 10 {R} approximately (in {mm} ) is (where {R} is radius of meniscus and {h} is height of water in capillary tube)

JEE Advanced 2021 Full Test 5 Paper 2

SECTION – C (Numerical Answer Type)
This section contains 06 questions. The answer to each question is a NUMERICAL VALUE. For each question, enter the correct numerical value (in decimal notation, truncated/rounded‐off to the second decimal place; e.g. XXXXX.XX).

Question : 16 of 54

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A vertical capillary tube with inside radius 0.25mm is submerged into water so that the length of its part protruding over the water surface is equal to 25mm. Surface tension of water is 73×10−3N∕m and angle of contact is zero degree for glass and water, acceleration due to gravity is 9.8m∕s2. Then value of 10R approximately (in mm ) is (where R is radius of meniscus and h is height of water in capillary tube)

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