Question:
The excess pressure inside a cylindrical drop of liquid or a cylindrical bubble of radius $r$ in a liquid of surface tension $T$ is
The excess pressure inside a cylindrical drop of liquid or a cylindrical bubble of radius $r$ in a liquid of surface tension $T$ is
Updated On: Jun 23, 2023
- $ \frac{T}{4R} $
- $ \frac{T}{R} $
- $ \frac{2T}{R} $
- $ \frac{4T}{R} $
Show Solution
Verified By Collegedunia
The Correct Option is B
Solution and Explanation
The excess pressure inside a cylindrical drop of liquid or a cylindrical bubble,
$ \Delta p=\frac{T}{R} $
Was this answer helpful?
0
0
Top JKCET Physics Questions
- In a resonance pipe the first and second resonances are obtained at depths $ 22.7\,cm $ and $ 70.2\,cm $ respectively. What will be the end correction?
- Which one of the following cannot be used as a moderator in a nuclear reactor?
- The following is the truth table for
- On introducing a thin film in the path of one of the two interfering beams, the central fringe will shift by one fringe width. If $ \mu =1.5, $ the thickness of the film is (wavelength of monochromatic light is $ \lambda $ )
- $p$ - type semiconductor is obtained by doping
View More Questions
Top JKCET Surface Tension Questions
Top JKCET Questions
- A sample of HI(g) is placed in a flask at a pressure of 0.2 atm. At equilibrium, the partial pressure of HI(g) is 0.04 atm. What is Kp for the given equilibrium? 2HI(g) ⇌ H2(g) + I2(g)
What will be the expression of Kp for the given reaction if the total pressure inside the vessel is P and degree of dissociation of the reactant is α? The reaction: N2O4 (g) ⇌ 2NO2
- In a resonance pipe the first and second resonances are obtained at depths $ 22.7\,cm $ and $ 70.2\,cm $ respectively. What will be the end correction?
- Specific conductivity of a solution
- Which one of the following cannot be used as a moderator in a nuclear reactor?
View More Questions
Concepts Used:
Surface Tension
The amount of energy required to increase the liquid's surface area by one unit area is known as surface tension. In other words, it is a property of the liquid surface to resist force.
Surface tension is defined as,
The ratio of the surface force F to the length L along which the force acts.
Mathematically, the surface tension formula can be expressed as follows:
T=F/L
Where,
- F is the force per unit length
- L is the length in which force act
- T is the surface tension of the liquid
Read More: Detergents and Surface Tension
Factors affecting surface tension:
- Impurities: The surface tension decreases with the addition of impurities.
- Surfactants: Adding surfactants in liquids lowers the tension of water making it interrupt aside or get susceptible.
- Temperature: The surface tension of a liquid reduces as the temperature rises.
The Unit of Surface Tension:
The SI unit of Surface Tension is Newton per Meter or N/m.