• 072920 77839
  • info@smartachievers.in
Menu
Back
  • JEE ADVANCE
  • JEE MAIN
  • NEET
  • BITSAT
  • CBSE BOARD
  • UP BOARD
  • CUET
  • Other Competitive Exams
JEE ADVANCE
  • CLASS XI - XII
  • CRASH COURSE
JEE MAIN
  • CLASS XI - XII
  • CRASH COURSE
CRASH COURSE
NEET
  • CLASS XI - XII
  • CRASH COURSE
BITSAT
  • CLASS XI - XII
CBSE BOARD
  • CLASS IX
  • CLASS X
  • CLASS XI
  • CLASS XII
  • CLASS VI
  • CLASS VII
  • CLASS VIII
UP BOARD
  • CLASS IX
  • CLASS X
  • CLASS XI
  • CLASS XII
CUET
  • CRASH COURSE
Other Competitive Exams
  • NDA
Courses

Surface Tension is the property of a liquid surface that causes it to behave like a stretched elastic membrane. It arises due to the cohesive forces between liquid molecules and plays an important role in many natural and industrial processes.

Surface tension is an important topic in Fluid Mechanics and is frequently asked in JEE Main Physics examinations.

What is Surface Tension?

Molecules inside a liquid experience equal attractive forces from all directions, whereas molecules on the surface experience a net inward force. As a result, the liquid surface tends to minimize its area and behaves like a stretched film.

Surface Tension
1 / 0 100%


Characteristics of Surface Tension

  • Acts only on the surface of a liquid.
  • Tends to minimize the surface area of a liquid.
  • Depends on the nature of the liquid.
  • Changes with temperature and impurities.
  • Responsible for many everyday phenomena.

Examples of Surface Tension

  • Formation of spherical water droplets.
  • Floating of a needle on water.
  • Insects walking on the surface of water.
  • Formation of soap bubbles.
  • Rise of liquid in narrow tubes.

Applications of Surface Tension

  • Manufacturing of detergents and soaps.
  • Ink and paint production.
  • Medical and laboratory equipment.
  • Capillary action in plants.
  • Industrial coating processes.

Importance for JEE Main

Surface tension is a frequently tested concept in JEE Main Physics. Questions are commonly asked on cohesive forces, capillary action, liquid drops, and practical applications. Understanding surface tension helps students build a strong foundation in

Download