Question

Which of the following are not the characteristics of mechanical waves?

• A. They transport only energy.
• B. They need a medium to travel.
• C. They propagate as particles in the medium exhibit to and fro motion.
• D. They transport only matter.

Answer 1

The correct option is D They transport only matter.

Mechanical waves propagate as an oscillation of matter and require medium to transport their energy. Particles move about their equilibrium position but their net displacement is zero. They only make to and fro motion. So, only energy is transported.