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 1 of 4.
MJM Gcek said:
4 years ago
@ Manoj.
You are correct but here it is asked curved in which direction which should be curved upwards or convex upwards.
You are correct but here it is asked curved in which direction which should be curved upwards or convex upwards.
(4)
Manoj vardhan said:
5 years ago
Right answer is Option C.
Because : when adhesion force is less than the cohesion force, liquid gather into droplet. For Ex (Mercury).
Cohesion>Adhesion, Top surface of mercury is convex & mercury fall in the capillary tube.
Because : when adhesion force is less than the cohesion force, liquid gather into droplet. For Ex (Mercury).
Cohesion>Adhesion, Top surface of mercury is convex & mercury fall in the capillary tube.
(1)
Dipu said:
5 years ago
B will be the correct answer.
(1)
Anmol Acharya said:
5 years ago
The meniscus is upper i.e, the surface curves downwards.
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.
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.
Aagaz said:
7 years ago
In the case of capillary fall, the contact angle always greater than 90°. Therefore answer should be (option b).
Suri said:
7 years ago
Mercury in free surface means it takes convex shape. So, B is the right answer.
Sadulla said:
7 years ago
If it's convex means curved upward.
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.
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