Civil Experiences Best Education Blog

Join WhatsApp groups and get 100% Free product coupon/Week and many more... Join the largest community now.

Join WhatsApp Group
If you don't join, then you're missing something big.

What is Minimum Size of Glass Tube?

Rate this post

Civil UPSC ESE Exam Solution 2021

UPSC ESE Exam Solution 2021 for Civil Engineering UPSC ESE 2021 GS Paper 1 download exam paper from telegram

What is the minimum size of a glass tube that can be used to measure water level if the capillary rise in the tube is to be restricted to 2 mm?

ANSWER= [A] 1.5 cm

Correct answer for What is the minimum size of glass tube is 1.5 cm.

Detailed Solution for Civil Engineering Exam

Capillary rise = [(4 σ cosθ) / (γ * d)] = h

if h less than or equal to 2 mm

(4 σ cosθ)/(γw * d ) ≤ 2 mm

d ≥ (4 σ cos θ) / (γw * 2 mm)

dmin = (4 σ cos θ)/(γw * 2 mm)

for water glass contact, θ = 0

dmin = (4 σ)//(γw * 2 mm)

dmin = 4 * 0.073575 N/m/(9810 N/m3 * 2 * 10-3 m)

dmin = 0.015 m = 15 mm = 1.5 cm

Author Aakash Dudhat

It is my pleasure to welcome you to, a website created and managed by Dudhat Aakash. In addition to having a Bachelor's degree in Civil Engineering

Leave a Comment

Join Our WhatsApp Group!