Question:
The angle of contact is the angle between ________.
The angle of contact is the angle between ________.
Show Hint
Angle of contact is acute for wetting liquids (like water on glass) and obtuse for non-wetting liquids (like mercury).
Updated On: Jun 26, 2026
- the normals to the liquid surface and the container wall
- the liquid surface and the container wall
- the tangent to the liquid surface and solid surface within the liquid at the point of contact
- the liquid surface and solid surface outside the liquid
- the line joining the centres of curvature of the liquid meniscus
Show Solution
Verified By Collegedunia
The Correct Option is C
Solution and Explanation
Step 1: Concept
Angle of contact is a property of a liquid-solid interface.
Step 2: Meaning
It is measured at the point where the liquid surface meets the solid.
Step 3: Analysis
The measurement is taken from the tangent to the liquid surface and the solid surface, specifically measured inside the liquid.
Step 4: Conclusion
Option (C) correctly defines this geometric relationship. Final Answer: (C)
Angle of contact is a property of a liquid-solid interface.
Step 2: Meaning
It is measured at the point where the liquid surface meets the solid.
Step 3: Analysis
The measurement is taken from the tangent to the liquid surface and the solid surface, specifically measured inside the liquid.
Step 4: Conclusion
Option (C) correctly defines this geometric relationship. Final Answer: (C)
Was this answer helpful?
0
0
Top KEAM Physics Questions
- A body oscillates with SHM according to the equation (in SI units), $x = 5 cos \left(2\pi t +\frac{\pi}{4}\right) .$ Its instantaneous displacement at $t = 1$ second is
Kepler's second law (law of areas) of planetary motion leads to law of conservation of
- Two capillary tubes A and B of diameter $1\, mm$ and $2\, mm$ respectively are dipped vertically in a liquid. If the capillary rise in A is 6 cm, then the capillary rise in B is
- In the circuit given in figure, 1 and 2 are ammeters. Just after key K is pressed to complete the circuit, the reading will be
- A plate has a length $ 5\pm 0.1\text{ }cm $ and breadth $ 2\pm 0.01\text{ }cm $ . Then the area of the plate is:
View More Questions
Top KEAM Surface Tension Questions
- Two capillary tubes A and B of diameter $1\, mm$ and $2\, mm$ respectively are dipped vertically in a liquid. If the capillary rise in A is 6 cm, then the capillary rise in B is
- $n$ identical drops, each of capacitance $C$ and charged to a potential $V$, coalesce to form a bigger drop. Then the ratio of the energy stored in the big drop to that in each small drop is
- The excess pressure inside a spherical drop of water is four times that of another drop. Then their respective mass ratio is
A glass capillary of radius 0.15 mm is dipped into a liquid of density and surface tension 1600 kg/m3 and 0.12 Nm-1,respectively. The liquid in the capillary rises by a height of 5.0 cm. The contact angle between liquid and glass will be:(Take g=10 ms-2)
- The energy stored in a soap bubble of diameter 4 cm is nearly (surface tension of soap solution is 0.07 N/m)
View More Questions
Top KEAM Questions
- i.$\quad$ They help in respiration ii.$\quad$ They help in cell wall formation iii.$\quad$ They help in DNA replication iv. $\quad$They increase surface area of plasma membrane Which of the following prokaryotic structures has all the above roles?
- A body oscillates with SHM according to the equation (in SI units), $x = 5 cos \left(2\pi t +\frac{\pi}{4}\right) .$ Its instantaneous displacement at $t = 1$ second is
- The pH of a solution obtained by mixing 60 mL of 0.1 M BaOH solution at 40m of 0.15m HCI solution is
Kepler's second law (law of areas) of planetary motion leads to law of conservation of
- If $\int e^{2x}f' \left(x\right)dx =g \left(x\right)$, then $ \int\left(e^{2x}f\left(x\right) + e^{2x} f' \left(x\right)\right)dx =$
View More Questions