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A capillary rise in a glass tube when immersed in oil having surface tension 0.0825 N/m at 20° C and specific gravity of 0.96 is 6.25 mm. For 30% increase in height of capillarity, the diameter of glass tube should be decreased by ______ (percentage)
Take angle of contact between glass tube and oil will be zero
Correct answer is '22.5-23.5'. Can you explain this answer?
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Verified Answer
A capillary rise in a glass tube when immersed in oil having surface t...
Concept:
Height of capillary rise is given by:
Where,
σ = Surface tension of fluid at 20° C
ρ = Density of fluid (kg/m3)
D = Diameter of the glass tube
h = height of capillary rise/fall
Calculation:
σ = 0.0825 N/m
θ = 0°
ρ = 1000 × 9.6 = 960 kg/m3
Diameter (D) = 5.60 mm
For 30% increase in “h”
hI = 8.125 mm
DI = 4.31 mm
% Decrease 
Most Upvoted Answer
A capillary rise in a glass tube when immersed in oil having surface t...
Capillary rise is inversely proportional to capillary tube diameter .
so if you rise capillary rise by 30 percent then the new dia will become 1/ 1.3 times of old dia .
means 76.9230 percent .
percentage reduction = 100- 76.9230=23.076%
so if you rise capillary rise by 30 percent then the new dia will become 1/ 1.3 times of old dia .
means 76.9230 percent .
percentage reduction = 100- 76.9230=23.076%
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A capillary rise in a glass tube when immersed in oil having surface t...
Calculation:
- Given data:
- Surface tension of oil (σ) = 0.0825 N/m
- Specific gravity of oil (S) = 0.96
- Capillary rise in glass tube (h) = 6.25 mm
- Percentage increase in capillarity = 30%
- Using the formula for capillary rise in a tube:
h = (2σcosθ)/(ρgR)
where h = capillary rise, σ = surface tension, θ = contact angle, ρ = density of liquid, g = acceleration due to gravity, R = radius of tube
- Given that the contact angle is zero, cosθ = 1
- The specific gravity of oil can be used to find the density of oil:
ρ = S * ρ_water, where ρ_water is the density of water
- Let the initial diameter of the glass tube be D1, and the final diameter after decrease be D2
- For a 30% increase in capillarity:
(2σcosθ)/(ρgD1) * 1.3 = (2σcosθ)/(ρgD2)
- Solving for D2:
D2 = D1 / √1.3
D2 = D1 / 1.14
- To find the percentage decrease in diameter:
% decrease = (D1 - D2) / D1 * 100
% decrease = (D1 - D1 / 1.14) / D1 * 100
% decrease = (0.86D1) / D1 * 100
% decrease = 86%
Therefore, the diameter of the glass tube should be decreased by 22.5-23.5% for a 30% increase in capillarity.
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A capillary rise in a glass tube when immersed in oil having surface tension 0.0825 N/m at 20° C and specific gravity of 0.96 is 6.25 mm. For 30% increase in height of capillarity, the diameter of glass tube should be decreased by ______ (percentage)Take angle of contact between glass tube and oil will be zeroCorrect answer is '22.5-23.5'. Can you explain this answer?
Question Description
A capillary rise in a glass tube when immersed in oil having surface tension 0.0825 N/m at 20° C and specific gravity of 0.96 is 6.25 mm. For 30% increase in height of capillarity, the diameter of glass tube should be decreased by ______ (percentage)Take angle of contact between glass tube and oil will be zeroCorrect answer is '22.5-23.5'. Can you explain this answer? for Civil Engineering (CE) 2024 is part of Civil Engineering (CE) preparation. The Question and answers have been prepared according to the Civil Engineering (CE) exam syllabus. Information about A capillary rise in a glass tube when immersed in oil having surface tension 0.0825 N/m at 20° C and specific gravity of 0.96 is 6.25 mm. For 30% increase in height of capillarity, the diameter of glass tube should be decreased by ______ (percentage)Take angle of contact between glass tube and oil will be zeroCorrect answer is '22.5-23.5'. Can you explain this answer? covers all topics & solutions for Civil Engineering (CE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A capillary rise in a glass tube when immersed in oil having surface tension 0.0825 N/m at 20° C and specific gravity of 0.96 is 6.25 mm. For 30% increase in height of capillarity, the diameter of glass tube should be decreased by ______ (percentage)Take angle of contact between glass tube and oil will be zeroCorrect answer is '22.5-23.5'. Can you explain this answer?.
A capillary rise in a glass tube when immersed in oil having surface tension 0.0825 N/m at 20° C and specific gravity of 0.96 is 6.25 mm. For 30% increase in height of capillarity, the diameter of glass tube should be decreased by ______ (percentage)Take angle of contact between glass tube and oil will be zeroCorrect answer is '22.5-23.5'. Can you explain this answer? for Civil Engineering (CE) 2024 is part of Civil Engineering (CE) preparation. The Question and answers have been prepared according to the Civil Engineering (CE) exam syllabus. Information about A capillary rise in a glass tube when immersed in oil having surface tension 0.0825 N/m at 20° C and specific gravity of 0.96 is 6.25 mm. For 30% increase in height of capillarity, the diameter of glass tube should be decreased by ______ (percentage)Take angle of contact between glass tube and oil will be zeroCorrect answer is '22.5-23.5'. Can you explain this answer? covers all topics & solutions for Civil Engineering (CE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A capillary rise in a glass tube when immersed in oil having surface tension 0.0825 N/m at 20° C and specific gravity of 0.96 is 6.25 mm. For 30% increase in height of capillarity, the diameter of glass tube should be decreased by ______ (percentage)Take angle of contact between glass tube and oil will be zeroCorrect answer is '22.5-23.5'. Can you explain this answer?.
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