🌊 Surface Tension: Concepts, Formulas & Exam Practice Questions Author: Vivek Kumar | Category: Engineering Physics | Target Exams: SSC JE, RRB JE, PSU, State PSC 🔍 What is Surface Tension? Surface tension is the property of a liquid surface that allows it to resist an external force due to cohesive nature of its molecules. It arises because molecules at the surface experience a net inward force , making the surface behave like a stretched elastic sheet. 🧠 Why It Matters in Competitive Exams? Surface tension is a commonly tested topic in engineering exams under physics or fluid mechanics. Questions typically involve: Conceptual understanding Formula-based numerical problems Application-based MCQs 📘 Key Concepts and Definitions Concept Description Cohesion Attraction between molecules of the same substance Adhesion Attraction between molecules of different substances Surface Tension (T or S) Force per unit length acting along the surface of a liquid...