Civil Engineering - Hydraulics - Discussion
Discussion Forum : Hydraulics - Section 3 (Q.No. 37)
37.
In an open tube, free surface of mercury remains
Discussion:
33 comments Page 2 of 4.
Vaish said:
6 years ago
The convexity upward.
The bent portion will be an upside.
So, the curve upward is the right option.
The bent portion will be an upside.
So, the curve upward is the right option.
Sadulla said:
7 years ago
If it's convex means curved upward.
Suri said:
7 years ago
Mercury in free surface means it takes convex shape. So, B is the right answer.
Aagaz said:
7 years ago
In the case of capillary fall, the contact angle always greater than 90°. Therefore answer should be (option b).
Keshav said:
7 years ago
Mercury, for example, has a very large surface tension and a large contact angle with glass. When placed in a tube, the surface of a column of mercury curves downward, somewhat like a drop.
Mahrukh said:
7 years ago
It's curved downward. By curved downward they mean going to bottom from top. The curve's highest point is on top, so the curve goes downward from the top point.
Abhinay said:
8 years ago
Wrong. Because of cohesive force is predominant here than adhesive force.
B GURUNATH said:
8 years ago
I think answer B is correct.
Because cohesion property is more than the adhesive property.
Because cohesion property is more than the adhesive property.
Lalit said:
8 years ago
Curve is upward due to dominant force is cohesion in mercury. While downward in water, in which dominant is adhesion.
Brajesh pandey said:
8 years ago
In capillary depression of hg the shape of curve of hg inside tube is curved downward. So option "C" is correct.
Post your comments here:
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers