NCERT CLASS 11 PHYSICS CHAPTER 14 – WAVES IN-TEXT / CONCEPT-BASED QUESTIONS AND ANSWERS 1. What is a wave? Answer: A wave is a disturbance that travels through a medium or space and transfers energy from one place to another without the bulk transfer of matter. In a mechanical wave, particles of the medium oscillate about their equilibrium positions. Examples: Waves travelling along a stretched string. Sound waves travelling through air. Water surface waves. 2. What is a mechanical wave? Answer: A mechanical wave is a disturbance that requires a material medium for its propagation. It travels through the interaction of particles of the medium. Examples: Sound waves. Waves on a stretched string. Water waves. Mechanical waves cannot travel through a vacuum. 3. What are transverse waves? Answer: Transverse waves are waves in which particles of the medium vibrate perpendicular to the direction of propagation of the wave. Examples: Waves on a stretched string. Electromagnetic waves. I...