Civil Engineering - UPSC Civil Service Exam Questions - Discussion

17. 

Mercury (density = 13600 kg/m3, σ = 0.49N/mm internal diameter open-ended capillary tube is inserted in the middle of the beaker into the mercury. The meniscus in the tube will be below the external mercury surface by how much distance?

[A]. 4.2 mm
[B]. 5.7 mm
[C]. 6.8 mm
[D]. 7.3 mm

Answer: Option D

Explanation:

No answer description available for this question.

Ravi said: (Jul 27, 2015)  
Dia is not provided. Can we calculate without dia?

Rohit said: (Jan 4, 2016)  
How to calculate without dia of tube? Is it 6 mm?

Vaibhav said: (Dec 22, 2017)  
Capillary rise (H) = (2*0.49) *10^2/13.6*9.81=7.3 mm.

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